Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ddd6065b1a3f5d2…

MALICIOUS

PDF

440.1 KB Created: 2022-02-06 23:04:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: bb23c52b5a4768c2e187293d4d33e28b SHA-1: 57031b75c81c5ecb89be0dc8e4a7e71236147da3 SHA-256: 3ddd6065b1a3f5d2b2fa4da18bc1bf7f149de428db23182902156f36a3c73a68
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external links, including one pointing to a compromised CMS upload storage. The heuristic 'PDF_SEO_UTM_REDIRECTOR_LINK' indicates the document uses an image lure and an SEO redirector, suggesting a phishing attempt to trick users into downloading further malicious content. The ClamAV detection further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4712

Heuristics 7

  • 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.
  • 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://lazav.co.za/XSRYdR1H?utm_term=cushing+disease+guidelines PDF link annotation
    • http://inwama4.vn/webroot/img/files/83952272040.pdfIn PDF document text
    • https://mcq-exambd.com/app/webroot/ckfinder/userfiles/files/61450714818.pdfIn PDF document text
    • https://theatresaucinema.fr/uploads/file/kerojagubuxoxapomibi.pdfIn PDF document text
    • http://mehmetrasimmutlu.com/icerik/file/zowiwenofosurij.pdfIn PDF document text
    • https://tssch.in/tssch/application/admin/uploads/file/bukazer.pdfIn PDF document text
    • http://burelomdo.com/ckfinder/userfiles/files/xuxitudenebikebuwino.pdfIn PDF document text
    • https://doluhosting.com/calisma2/files/uploads/1576498411.pdfIn PDF document text
    • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/72f51cb42dcb4c20ccffab2cdba43227/87191336809.pdfIn PDF document text
    • http://starysklep.itmega.pl/photo/file/54285815212.pdfIn PDF document text
    • https://reparationmobile.net/userfiles/file/71579629782.pdfIn PDF document text
    • https://discovercefalu.com/_data/images/file/wofuzakeromed.pdfIn PDF document text
    • http://www.artefuoricentro.it/js/lib/ckfinder/userfiles/files/wibirugesab.pdfIn PDF document text
    • http://jkbprivateiti.com/userfiles/file/20947071343.pdfIn PDF document text
    • https://sensormaticltd.com/app/templates/js/ckfinder/userfiles/files/togaviradowutat.pdfIn PDF document text
    • http://yeongwonenc.com/userfiles/file/koboreju.pdfIn PDF document text
    • http://singer-island-condos.com/userfiles/files/vurojagijepap.pdfIn PDF document text
    • https://hoangphatdanang.com/uploads/image/files/77042301790.pdfIn PDF document text
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/16162ab2a56ba7---wexadevug.pdfIn PDF document text
    • https://hoangphatdanang.com/uploads/image/files/dorujovakajeterelope.pdfIn PDF document text
    • https://ijieet.org/ckfinder/userfiles/files/32974479273.pdfIn PDF document text
    • http://apgicl.com/public/files/assets/ckeditor/kcfinder/upload/files/nenajetagewurade.pdfIn PDF document text
    • https://ceylinpin.com/calisma2/files/uploads/veziwabuki.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/161a526fb24b97---juwusifizidafadazatow.pdfIn PDF document text
    • http://www.trisad.kz/ckfinder/userfiles/files/fopejidolinakozopejinib.pdfIn PDF document text
    • http://dominopark.pl/public/upload/ckfinder/userfiles/files/68436008975.pdfIn PDF document text
    • http://triatlonbizuterie.cz/sites/default/files/file/33431027860.pdfIn PDF document text
    • https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/83a55b87b43312ad38d994fddf9b2627/robod.pdfIn PDF document text
    • http://usateatop.com/_upload/files/53555476089.pdfIn PDF document text
    • http://purifoy2020.com/clients/1/11/118d8b7ee1ea4bab8fb19da95c56260f/File/vokazibexipawelewuriko.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1619503a0598e6---88344746481.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_off000674a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x674A7 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00068bc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68BC7 10340 bytes
SHA-256: 06fa0447b01547865c3dd1653c8ec0f239168d2016589dc913a865bf194e85e7
font_02_sfnt_off0006a2c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A2C9 17528 bytes
SHA-256: 8d61b13229fa25f6de1e82ac5dea6cecbb8d0546b21371840c218998c63e6f5b