Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d5ab874fa659a5…

MALICIOUS

PDF

319.0 KB Created: 2022-03-15 12:13:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-27
MD5: 78965c6aec41da60e196c5bb09bbb28d SHA-1: c06bd24c230fb8798e9030eaea644db689fe6df8 SHA-256: c5d5ab874fa659a5600ed5c1a921e5ad5d2f486042b79cdc19903ec336d52470
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external URIs, including one identified as an SEO redirector for a 'free-download phishing' lure. The ClamAV detection and ML classifier further indicate malicious intent. The embedded JavaScript likely facilitates the download and execution of a second-stage payload from one of the provided URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6303

Heuristics 6

  • 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.
  • 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.
  • 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://loheb.co.za/XSRYdR1H?utm_term=python+basic+programs+book+pdf PDF link annotation
    • http://kenshopvn.com/uploads/files/dumazuxilajodiz.pdfIn PDF document text
    • http://zeroschem.com/upload/fck/file/golab.pdfIn PDF document text
    • https://apgicl.com/public/files/assets/ckeditor/kcfinder/upload/files/89138257748.pdfIn PDF document text
    • https://bimore.vn/webroot/img/files/66705492218.pdfIn PDF document text
    • http://immodraft.nrw/images/architekten_agentur_images_/file/6761915507.pdfIn PDF document text
    • https://www.oalysa.cz/ckfinder/userfiles/files/15988715183.pdfIn PDF document text
    • http://yameitecl.com/ckfinder/userfiles/files/20220301_082420.pdfIn PDF document text
    • http://baugeraeteverleih.de/benutzerdateien/65082219906.pdfIn PDF document text
    • http://www.guard.ee/kcfinder/upload/files/88009007177.pdfIn PDF document text
    • https://imahima.xyz/js/ckfinder/userfiles/files/18412594584.pdfIn PDF document text
    • https://girilawfirm.com/content_files/files/5948103192.pdfIn PDF document text
    • http://s2ipower.com/survey/userfiles/files/32794342926.pdfIn PDF document text
    • http://arsvet.ru/img/upload/gatogeraxijubewexuf.pdfIn PDF document text
    • http://ghefoot.com/fckeditor_userfiles/file/simubaguduraneg.pdfIn PDF document text
    • http://colantuono.it/userfiles/files/24877628262.pdfIn PDF document text
    • https://poetnazrul.com/kcfinder/upload/files/depumabagufapobata.pdfIn PDF document text
    • http://www.crislbd.com/public/admin/assets/ckeditor/kcfinder/upload/files/tonow.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/bivirirexunojot.pdfIn PDF document text
    • https://www.mouvancevoyages.com/public/kcfinder/upload/files/jejiminuwub.pdfIn PDF document text
    • http://dooroc.com/tk/upload/file/25520042835.pdfIn PDF document text
    • http://cisseo.net/userfiles/files/32409729890.pdfIn PDF document text
    • http://theofficeplus.com/userfiles/file/12745395344.pdfIn PDF document text
    • http://ekorepetycje.eu/Upload/file/573648869.pdfIn PDF document text
    • http://zrdb-drogbud.pl/Upload/file/zefovoxiwimokin.pdfIn PDF document text
    • https://radio-uman.com/kcfinder/upload/files/38502528996.pdfIn PDF document text
    • http://zhuoxinlaw.com/userfiles/file/20220223044419_752737782.pdfIn PDF document text
    • https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/3n63adeog8u30gjs88u6nf89g1/gujabupalesevel.pdfIn PDF document text
    • https://bennex.co.th/assets/kcfinder/upload/files/puzetuz.pdfIn PDF document text
    • https://segurosjdd.com/wp-content/plugins/super-forms/uploads/php/files/afp9raivsmmnpjok7v6lnlk100/757729893.pdfIn PDF document text
    • https://northcity.rs/slike/files/9463693232.pdfIn PDF document text
    • http://rollaktif.com/images_upload/files/semupifolavomufovavo.pdfIn PDF document text
    • http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/1622be1e56e539---88452578421.pdfIn PDF document text
    • https://deycaterers.com/ckfinder/userfiles/files/65785889657.pdfIn PDF document text
    • https://gyogytorna-vac.hu/admin/kcfinder/upload/files/gelevutuxibazejiduzabikiv.pdfIn PDF document text
    • https://malmospelmanslag.se/userfiles/file/74273840176.pdfIn PDF document text
    • https://atlas-consulting.ro/fckeditor/fisiere/file/23675025169.pdfIn PDF document text
    • http://www.studioamorosi.com/notizie/allegati/31482598259.pdfIn PDF document text
    • https://ytdrive.com/CKEdit/upload/files/86027511942.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_off00048d66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48D66 11236 bytes
SHA-256: b721cc202a3dfb24c2e5f0067586a0382b789d9768bc27e91ca9b7fbfd774b7d
font_01_sfnt_off0004a731.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A731 17268 bytes
SHA-256: 086a22bc7190747734c21f7cd9f2ea72bccd8f66cea875eac6f018feede31c8c
font_02_sfnt_off0004d463.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D463 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9