Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9c4de55e0aad49b…

MALICIOUS

PDF

38.7 KB Created: 2021-07-06 05:34:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1ce0fbc9639edab5d604e44e4249f747 SHA-1: c0bab2a2ef634eeac0ee40a3f9413bae628732e2 SHA-256: c9c4de55e0aad49b7d7f87269f3fd617c9c907b4b4e33540f7e26a69444bca6b
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains embedded JavaScript and is identified as a phishing lure by multiple heuristics, including an image-only document with an action trigger. The document body is heavily obfuscated, but the presence of JavaScript and numerous external links, many pointing to compromised WordPress uploads, suggests it is designed to redirect users to malicious sites or download further payloads. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8501

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 38 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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
  • 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 http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c7170c12fd7---42058133468.pdf
    • http://4reality.cz/userfiles/files/nefilonerije.pdf
    • http://absigorta.come/file/47386513705.pdf
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608f81ba2e733---92426995546.pdf
    • https://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/tio5572vensdcjmfo4rfdh8mi8/61108026596.pdf
    • http://hubbardfamilycircle.com/clients/62940/File/53509571277.pdf
    • https://eobliecky.sk/userfiles/file/porovokixowugidexi.pdf
    • https://fanaf.comarticle_ressources/file/7256322983.pdf
    • http://drentmedischadvies.nl/uploads/files/65327350098.pdf
    • http://kingsauto-bar.com/js/upload/files/66648412309.pdf
    • https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/np57ufc22cbvmbm6ft5ibe3r88/70814352278.pdf
    • https://ratco-hardware.com/Ups/files/jelobakududebipakaf.pdf
    • http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160804970e6699---tavupavibabazu.pdf
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/c47085f88ab49ae3737dfde0beac3
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=gta+san+andreas+extreme+edition+2011+download

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