Malicious PDF — malware analysis report

Static analysis result for SHA-256 265c07599314104c…

MALICIOUS

PDF

58.4 KB Created: 2021-02-06 14:52:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 3a7b4fee413f8e88947312b110a282d7 SHA-1: e164aebc32a9570d46ab6f35338080378a010e9e SHA-256: 265c07599314104cdf4a3c302ce5377ea7328f7fc6cf53413a5c116a1f94ca1f
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a mass external link farm, with many links pointing to other PDFs, and uses a deceptive lure related to Hurricane Dorian news to trick users into downloading further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://baarspo.ru/aws?utm_term=hurricane+dorian+news+report+bahamas PDF link annotation
    • http://wordwild-store.com/93768884149s3xzv.pdfIn PDF document text
    • https://cdn.sqhk.co/devisofage/geNVbhb/1901943902.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374532/normal_5fd7d3ce766d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413375/normal_6016357120033.pdfIn PDF document text
    • https://daxodewime.weebly.com/uploads/1/3/1/3/131398188/3803329.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470543/normal_601e663d0f82e.pdfIn PDF document text
    • http://losqutoq.online/judgement_dating_guideclabw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490251/normal_5fda868e6ca8b.pdfIn PDF document text
    • https://cdn.sqhk.co/jukowejazus/jcuXhaR/music_quiz_questions_90s_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/ladesajisama/fEiiFhe/lanewogudirememikeb.pdfIn PDF document text
    • https://s3.amazonaws.com/xowasosuf/wikawasediz.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/81433902583.pdfIn PDF document text
    • https://s3.amazonaws.com/wupuxus/rasaw.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/76282459408.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/95739203961.pdfIn PDF document text
    • https://s3.amazonaws.com/jivala/3752169939.pdfIn PDF document text

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