Malicious PDF — malware analysis report

Static analysis result for SHA-256 6df8e98f0b079c36…

MALICIOUS

PDF

59.9 KB Created: 2021-05-29 21:48:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d2b739f0acd593aecea8660794b51a1b SHA-1: be03d269e5f4ce467bd3ac32c3797f9a36ab6b29 SHA-256: 6df8e98f0b079c3604ca085a21358cd59b18b0065eec970e1e2719ae84b05ba2
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file exhibits characteristics of a phishing lure, including being image-heavy with minimal text and containing numerous external links. The presence of multiple links pointing to compromised WordPress upload directories and disposable hosting suggests an attempt to redirect users to malicious sites. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6893

Heuristics 6

  • 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 59 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.
  • 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 https://drafthe.ru/uplcv?utm_term=clerks+praxis+book+pdf
    • http://aaaexpressheating.com/userfiles/file/65091268260.pdf
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa29fceaabe---luzer.pdf
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b09f2966972---47493780646.pdf
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/160783206c7560---punezagego.pdf
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/32c2a5f61df9dbf5ded7fff2d2a868ac/kulaf.pdf
    • https://www.djluk.co.uk/wp-content/plugins/super-forms/uploads/php/files/fems85ma1m3cq5bovl02l66iuq/52884168310.pdf
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/eebcac5b2104e5f56fe4a5baac5da2fb/kavij.pdf
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607f11270a181---72649674239.pdf
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/2f8e4bba5dcfe706f81b68323a72a5d5/35818103770.pdf
    • http://www.supercarrentalsofmiami.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a33a1de7c11---nujifi.pdf
    • https://syteq-pro.com/userfiles/file/77572844397.pdf
    • http://rld-carbon.ru/file/73618571391.pdf
    • https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/cecdg0vht8sb3dkq2vuaivms6i/rakonujakobizawokijizove.pdf
    • http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f9b6e83382---posulija.pdf
    • http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a774e83d9a4---64023698717.pdf
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070694e1c2e3---sepabamog.pdf
    • http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/16074164285d48---16918199988.pdf
    • https://systematix.pl/userfiles/file/junefexesoridubawar.pdf

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