Malicious PDF — malware analysis report

Static analysis result for SHA-256 98d6b66abf15ad68…

MALICIOUS

PDF

50.6 KB Created: 2020-11-19 15:39:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c47c443f3bf7adc3d7e10b94b8722b4a SHA-1: 89c740c699530a2c0f6325a973caef72c446d486 SHA-256: 98d6b66abf15ad68f9be2ca54ad3442d771545ee5fcb8205b0ab29689dc1deb6
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple external URIs and is flagged as a link farm on disposable hosting, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier further support its malicious nature. The embedded URLs likely lead to a second-stage payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7323

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://trafffe.ru/aws?utm_term=cavernous+transformation+of+portal+vein+etiology
    • https://cdn-cms.f-static.net/uploads/4405443/normal_5f9cd9545ed26.pdf
    • https://jufikaparilo.weebly.com/uploads/1/3/4/5/134592165/c137580.pdf
    • https://vunixumo.weebly.com/uploads/1/3/1/4/131453253/silopisujomap.pdf
    • https://koterevimudo.weebly.com/uploads/1/3/4/3/134342185/zilurelomuromujaguvo.pdf
    • https://zunuduzeguw.weebly.com/uploads/1/3/4/3/134344012/wuxivubej_gewot_gisib_xakoseba.pdf
    • https://cdn-cms.f-static.net/uploads/4370089/normal_5fb5d3d96c7f5.pdf
    • https://fitetavixanara.weebly.com/uploads/1/3/4/7/134721375/sagidovorepabev.pdf
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/velowo_dakemolaku.pdf
    • https://lotagixowila.weebly.com/uploads/1/3/1/1/131164100/94f126fd.pdf
    • https://s3.amazonaws.com/juvetaso/radeli.pdf
    • https://s3.amazonaws.com/welanisowari/11924873214.pdf
    • https://uploads.strikinglycdn.com/files/6233daf4-5a74-4636-a9d6-e012ac6e56a7/54914207015.pdf

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