Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af1ec861f947c66…

MALICIOUS

PDF

476.7 KB Created: 2022-02-05 17:53:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 7a3da9dba8a08c6a284819d5c4651987 SHA-1: 11ce2a6d00fcd27212f3402f019d7bcd02e9743a SHA-256: 4af1ec861f947c661320bf9eda2eb2d6bdfc0b2e0622b8a1fb8f04d281c9aa0f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains embedded JavaScript and multiple links to compromised websites, including a link farm hosted on a compromised WordPress upload directory. The presence of a download button lure and the ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggest a phishing campaign aimed at delivering malware. The embedded JavaScript likely facilitates the execution of malicious code or redirects the user to further malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4051

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://podar.co.za/XSRYdR1H?utm_term=budgeting+template+excel+free PDF link annotation
    • http://atlonnuri.org/UpLoadImage/editer/files/94447779485.pdfIn PDF document text
    • http://velomagazin.hu/UserFiles/file/14642345110.pdfIn PDF document text
    • https://szalkasszorutacskok.hu/app/webroot/files/content/files/dezim.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16141578df142d---50189855268.pdfIn PDF document text
    • http://finadev-groupe.com/userfiles/file/dajanos.pdfIn PDF document text
    • https://venefoil.com/ckfinder/userfiles/files/zaxawiwo.pdfIn PDF document text
    • http://cistenivytahu.cz/upload/file/lijomuke.pdfIn PDF document text
    • http://aldo-ins.com/userfiles/file/74799998794.pdfIn PDF document text
    • http://worldsocialistpartyindia.org/ckfinder/userfiles/files/27173654651.pdfIn PDF document text
    • https://www.jornaloflorense.com.br/admin/ckeditor/kcfinder/upload/files/verupata.pdfIn PDF document text
    • http://graphicyazd.com/ckfinder/userfiles/files/tikumaribiz.pdfIn PDF document text
    • https://glycocalyx.nl/userfiles/image/file/tupoxevafodutugiza.pdfIn PDF document text
    • http://solarexperte.ch/fckeditor/editor/images/file/mubexunolepufob.pdfIn PDF document text
    • http://www.park-seversk.ru/other/js/ckfinder/userfiles/files/11640622743.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/1fafb92fa0e6791bc0af6992621ea5c0/4117902405.pdfIn PDF document text
    • http://raiz.jp/kcfinder/upload/files/78365597005.pdfIn PDF document text
    • https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/72a079828b9edce1de296b5eac866030/nonikubejijarapeli.pdfIn PDF document text
    • http://ambulatorioveterinariomariani.it/userfiles/files/foderodevatotifopax.pdfIn PDF document text
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/70f2967884d53fb585eae2bc2f363f54/budoxazifavoto.pdfIn PDF document text
    • https://mut-zur-veraenderung-hambuch.de/userfiles/file/11490293256.pdfIn PDF document text
    • http://songiadahoaian.com/upload/ck/files/58097795298.pdfIn PDF document text
    • https://marjoyunlar.com/calisma2/files/uploads/getetoben.pdfIn PDF document text
    • http://ymmicro.com/files/files/11130598816.pdfIn PDF document text
    • http://radis-rrl.ru/userfiles/image/66950167123.pdfIn PDF document text
    • https://ww150004.linebot.net/upfile/files/20210929062751.pdfIn PDF document text
    • https://chiuman-hk.com/images/file/finegodeduropopuresugope.pdfIn PDF document text
    • http://scandinavia-ex.com/images/blog/file/16592412339.pdfIn PDF document text
    • http://lycee-elm.org/userfiles/file/jodidolepifit.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/161899a8cf040b---jobevipumisuvoretoz.pdfIn PDF document text
    • http://gpszone.hu/upload/userfiles/file/vuzifikoguser.pdfIn PDF document text
    • https://aep-tc.com/cache/fck_files/file/vizamufajovavarizusowerul.pdfIn PDF document text
    • http://www.ccengis.be/applications/ckeditor/addons/ckeditor/ckfinder/userfiles/files/11627159104.pdfIn PDF document text
    • http://driver-jazda.pl/upload/file/jujekasebomodu.pdfIn PDF document text
    • https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/216030172c480e7f9949f48435ab5d94/nozusipurapuredatiri.pdfIn PDF document text
    • https://www.journalstudiesanthropology.ro/adm/jsq/kcfinder/upload/files/18659373165.pdfIn PDF document text
    • http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f2d9d5c32db---44325051212.pdfIn PDF document text
    • http://stefanourso.com/public/userfiles/file/tinifedimogexetedawazigap.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000706b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x706B9 16708 bytes
SHA-256: 7f97b4886d75cff0f8b6585ab63748c1f57cbb7b1e761195a2b2bb2f8cbec58f
font_01_sfnt_off00073215.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73215 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00074937.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74937 10932 bytes
SHA-256: 5ba7f7e2d9bcd9abf70e908fbb2f5ba48c6d465b657596473db2673c98d3195d