Malicious PDF — malware analysis report

Static analysis result for SHA-256 62baa012960c5783…

MALICIOUS

PDF

58.2 KB Created: 2021-05-25 08:37:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: bbd8cb6547f798865f46b443bbe1ca5b SHA-1: 1237e93ec3aba60ee384f2ce5957e9c976147bea SHA-256: 62baa012960c5783c6a01d55c2e01686235a96271369d75c4c3f93e0fb932cdc
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7345

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://lozipotod.ru/strik?utm_term=my+toto+washlet+stopped+working PDF link annotation
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    • https://cdn-cms.f-static.net/uploads/4486199/normal_603a1b5194a94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469641/normal_603fb4f4a3dae.pdfIn PDF document text
    • https://xugowumilivave.weebly.com/uploads/1/3/4/8/134846580/tizefipos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402718/normal_602dfe599138b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465400/normal_5ff483ecb0a3d.pdfIn PDF document text
    • https://rokipidofavum.weebly.com/uploads/1/3/4/0/134042790/5479585.pdfIn PDF document text
    • https://gamidamivagug.weebly.com/uploads/1/3/5/3/135324690/7802030.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414352/normal_601d881657bf7.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3962e6c4-e232-41a1-9e47-6e374f569793/11451480278.pdfIn PDF document text
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    • https://s3.amazonaws.com/sutawowirosuvuv/magasin_informatique_amberieu_en_bugey.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31e402ad-3258-44df-8f12-17b29d32c8b7/how_do_you_feel_lyrics_ed_sheeran.pdfIn PDF document text
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    • https://uploads.strikinglycdn.com/files/acdeef7f-7259-4abf-9d87-b03abd9e0e3f/schaums_outline_of_3000_solved_problems_in_calculus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71ebed3e-ab1f-4b84-97e0-4cbca8220a9d/keurig_b40_not_pumping_water.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e555354-d3fe-4d7c-a18f-2e3ea270854c/rudigimozoluru.pdfIn PDF document text
    • https://s3.amazonaws.com/pokixovuxik/71718735634.pdfIn PDF document text