Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ec59b9b55fcfc93…

MALICIOUS

PDF

46.1 KB Created: 2021-03-09 04:27:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: e70f087e01b506910c2801c1e8d067d7 SHA-1: 3ab7ed890f31051b350930036f8fbbb72aa97d3e SHA-256: 8ec59b9b55fcfc937993160d8aa72f09d3f56c3d6a99f58f4bfa1f6660711a8a
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains an embedded URI pointing to a suspicious domain, which is also flagged by heuristics as a link farm on disposable hosting. ClamAV detection and ML classification indicate maliciousness, strongly suggesting a phishing or malware distribution attempt. Although no scripts were extracted, the presence of a malicious URL and the document's structure indicate it's designed to redirect users to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7903

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://fokemale.ru/award?keyword=business+law+textbook+pdf+download PDF link annotation
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    • https://bobusenig.weebly.com/uploads/1/3/4/8/134866704/lorow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485710/normal_603c2989b63de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426062/normal_5fd3b2428ca24.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483075/normal_5fdf71cfca37f.pdfIn PDF document text
    • https://jowadukezivi.weebly.com/uploads/1/3/1/3/131379295/kepofebe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485589/normal_6046473febfd2.pdfIn PDF document text
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    • https://s3.amazonaws.com/lolaritemukole/howard_miller_wall_clock_troubleshooting.pdfIn PDF document text
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    • http://wedizakur.epizy.com/tomojuzixi.pdfIn PDF document text
    • https://s3.amazonaws.com/fowonaxul/capacitive_fingerprint_sensor.pdfIn PDF document text
    • http://gufaxepelirub.rf.gd/31455439009.pdfIn PDF document text