Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e7b980c663579c5…

MALICIOUS

PDF

47.8 KB Created: 2021-05-17 09:28:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7660a455d9c11adb4444a0d88cd2c89d SHA-1: 12d4efbddc13855f9aba584aba84517aaf67f9c8 SHA-256: 7e7b980c663579c592c22570038fc4c88bde9599a343cc0e096360057e7e6e24
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its small size, image-heavy content, and embedded links pointing to compromised CMS uploads. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9344

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-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 47 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://grafitpoint.ru/wp-content/plugins/super-forms/uploads/php/files/d0d6b7e924c057292200535d03c50c8b/47105332673.pdf
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f30ae57993---febadufipom.pdf
    • https://www.emma-solutions.de/wp-content/plugins/formcraft/file-upload/server/content/files/160804e24a1fe4---81924922271.pdf
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607223ad6aa34---sopupiteruso.pdf
    • http://creativeindustries.ru/uploads/userfiles/file/jexawaxozifefetotakodazaj.pdf
    • https://alshamiltrading.com/alshamilfiles/file/lizekaxof.pdf
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609df68808f75---3628012688.pdf
    • http://amuseonline.com/absite/userfiles/file/37822845270.pdf
    • http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082a65d57835---86481009273.pdf
    • http://atdawnwelift.com/userfiles/file/zigefibapafeledabagi.pdf
    • https://www.varishastalari.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078cdc0e4397---99949365370.pdf
    • https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16083dadc0b4f8---61709858589.pdf
    • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/651452e84e1901cc35e82d1ec33b744e/43388235134.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160867bd9a5a99---24757443888.pdf
    • https://mrmobilewebsite.agency/wp-content/plugins/super-forms/uploads/php/files/929313677815fa58437a69bc2c26928f/72975999377.pdf
    • https://popa.com.br/wp-content/plugins/super-forms/uploads/php/files/0038cc2f2e705f94448cc4056a0d827c/lebonazizoruxumufokudiluj.pdf
    • http://atdawnwelift.com/userfiles/file/duvufoburawasepo.pdf
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/c6bc8a27c5fe528cf2d471bc9ce97b0c/23117967477.pdf
    • http://xn--clinicaquirogavilario-vbc.com/wp-content/plugins/super-forms/uploads/php/files/u00ev6vaeajf04jcq7a0fhmtf5/nenof.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=downy+clean+breeze+dryer+sheets

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