Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4b4322ae9168429…

MALICIOUS

PDF

50.6 KB Created: 2021-01-03 23:33:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: cdd1bad06ca2e69bbf067a3926fdf909 SHA-1: 2c9ec516c2cbd004438c2c731dec1c4ebcccf384 SHA-256: f4b4322ae91684295bd57e4c4d7ebe89e27c0e3e1d029bc876be5ec196481bdf
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a link farm with numerous external URLs, many hosted on disposable domains, suggesting a phishing or SEO poisoning campaign. The heuristic 'PDF_SEO_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' indicate a large number of links designed to manipulate search engine results or direct users to malicious sites. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7801

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://traffking.ru/aws?utm_term=brazil+jersey+2014+font+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412763/normal_5fad2a5ee243c.pdfIn PDF document text
    • https://lirurarupo.weebly.com/uploads/1/3/4/7/134770738/b281a40.pdfIn PDF document text
    • https://sepenunaxob.weebly.com/uploads/1/3/0/7/130776074/pemotafazewimuzo.pdfIn PDF document text
    • https://gedepavo.weebly.com/uploads/1/3/5/3/135391693/firil.pdfIn PDF document text
    • https://kerumeso.weebly.com/uploads/1/3/4/6/134641164/balaxusolifavu.pdfIn PDF document text
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/gegudas-vepizusek-lozenurabiwepaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/342e9401-5d26-4c48-8ea3-ebd662e82bf0/subtractive_sculpture_definition_in_art.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa8a7883-a982-4454-8cb0-00256f73a24d/nipegopasaredudixedi.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/59742845623.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/tatosuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/821860e1-ac3e-4d36-b646-cddded54d5d3/zubepibafukifo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57d1b783-ac3a-40da-ab93-74d1b5506785/dji_spark_weight.pdfIn PDF document text

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