Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cc7c6f109963dab…

MALICIOUS

PDF

58.2 KB Created: 2021-02-28 04:46:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 316cbc5b41b0d32e38b408fab31e1afa SHA-1: 1e0a5a057b0ce8a19706d74f82ed194581ae017e SHA-256: 5cc7c6f109963dab8f0f954b8dee31a02b072be59ec12a435b8ffd239834a094
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains a significant number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to potentially harmful content. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards an attempt to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8553

Heuristics 5

  • 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 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://nipisod.ru/strik?utm_term=mr+coffee+coffee+pot+how+to+use PDF link annotation
    • https://dodikajopofibu.weebly.com/uploads/1/3/4/7/134704264/1173941.pdfIn PDF document text
    • https://cdn.sqhk.co/jigugabopu/9gdjb2c/25141219231.pdfIn PDF document text
    • https://bulugigedi.weebly.com/uploads/1/3/4/7/134714886/gojizisu.pdfIn PDF document text
    • https://cdn.sqhk.co/zezinojox/dioPMjj/50674763462.pdfIn PDF document text
    • https://pofekivivefuron.weebly.com/uploads/1/3/5/3/135339802/4698539.pdfIn PDF document text
    • https://tijoteveduno.weebly.com/uploads/1/3/4/8/134853829/fogigunaw_bodaxisolop_rekower_womotamigeko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482215/normal_5fda77221fb4a.pdfIn PDF document text
    • http://true-board1.club/52225700787mmvps.pdfIn PDF document text
    • https://vawosikajoj.weebly.com/uploads/1/3/1/4/131438279/9449800.pdfIn PDF document text
    • https://cdn.sqhk.co/bexefoboxevi/iygjScX/65837000897.pdfIn PDF document text
    • https://natuxebifenukud.weebly.com/uploads/1/3/1/3/131378868/7599272.pdfIn PDF document text
    • https://cdn.sqhk.co/susojareb/heIzYex/lara_croft_relic_run_mod_apk_obb.pdfIn PDF document text
    • https://s3.amazonaws.com/povelenavuviw/androids_only_sbr.pdfIn PDF document text

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