Malicious PDF — malware analysis report

Static analysis result for SHA-256 0467dd536cda2319…

MALICIOUS

PDF

39.0 KB Created: 2021-06-24 03:36:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: f7478730046ff5a5e1bd45bed213c3a0 SHA-1: a7918d8a1ef6cd9e1073756e4cbf380b0a23eea5 SHA-256: 0467dd536cda23199a6fdd01878eda77d7043b7fa6cec3bf9f9fda729ab06b45
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and uses an image-based lure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7332

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 39 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://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/bce49d76baf6c46d2f49a13a3ff89f2d/wuruvusipalogezitidirizu.pdf In PDF document text
    • https://cosalesrep.com/wp-content/plugins/super-forms/uploads/php/files/f4fd2bf90bb9b61978c011818a36ff2d/46171648196.pdfIn PDF document text
    • http://staropolski.net/Upload/file/44795052878.pdfIn PDF document text
    • http://lowchens.org/userfiles/file/nenabadutunaba.pdfIn PDF document text
    • https://protradingindia.net/userfiles/file/zatatusudideg.pdfIn PDF document text
    • https://themodernla.com/wp-content/plugins/super-forms/uploads/php/files/c0812ddf273709e437da8c5b61aa89cb/fitesovokuzuramutu.pdfIn PDF document text
    • https://floorco.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/739b3560ff4cf3f0e242427e4bff45ad/mutajerixudopodoxapowuta.pdfIn PDF document text
    • http://abwingsmd.com/uploads/files/tuvadonele.pdfIn PDF document text
    • https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/2t7oc0jk97vo3ghivr06fsa9j4/30487192229.pdfIn PDF document text
    • https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/f6c785345d893412b0a6acb18912c926/gudutunuweduriwi.pdfIn PDF document text
    • https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/2efd685ec4f279a956b4ac3e5b9fb9b6/30128136133.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/8a160d15a47f4f3c1345fd54d4cbe17f/51995639057.pdfIn PDF document text
    • http://instant-image.net/UserFiles/Site/File/69756847712.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=laila+majnu+story+malayalam+pdfPDF link annotation

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