Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3a9c058ddfe6b33…

MALICIOUS

PDF

52.6 KB Created: 2020-11-13 04:11:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ca0dea557729b158e18daab8474ad7b0 SHA-1: cdd84e0c9b1a6969cde49084768e62b0c322d86c SHA-256: f3a9c058ddfe6b33afdde42298b1f877dd1a5e79bbe2481ba613c1f31297c4f3
212 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, with several pointing to known malicious redirectors and link farms. The ClamAV detection and ML classifier also indicate malicious intent. The primary attack pattern observed is the use of a link farm to direct users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6781

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffmen.ru/aws?utm_term=how+to+format+code+in+phpstorm
    • https://fuwurugosudopo.weebly.com/uploads/1/3/4/3/134326966/vinufo.pdf
    • https://nupureforisuro.weebly.com/uploads/1/3/4/3/134353583/8645293.pdf
    • https://nenodomamik.weebly.com/uploads/1/3/4/0/134095987/lagibi-xulumila.pdf
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/zabodetajozojux.pdf
    • https://lapebezufidasaz.weebly.com/uploads/1/3/4/3/134316617/selodipazitidekoxi.pdf
    • https://uploads.strikinglycdn.com/files/aa5425f7-4189-4b8a-9dcf-1e72dc345327/96945567598.pdf
    • https://uploads.strikinglycdn.com/files/7f30bbcf-234f-4f20-978b-7faaefccd749/69160251274.pdf
    • https://uploads.strikinglycdn.com/files/066997d0-1824-4a39-bb7c-45e31a71c757/descargar_gratis_musica_de_los_rehen.pdf
    • https://uploads.strikinglycdn.com/files/906b4b7f-0dd7-4fbe-81f7-8f18818280aa/ft_450d_manuale_italiano.pdf
    • https://uploads.strikinglycdn.com/files/e9e32946-b332-4a50-8e01-92406b322718/gijijimatuzid.pdf
    • https://uploads.strikinglycdn.com/files/e6f6518a-fc11-4af1-b8ed-b0cd92726ad2/ravuluravupijisib.pdf
    • https://uploads.strikinglycdn.com/files/e238bdb5-a421-4803-82ac-3d62a207edd8/fifa_13_ultimate_team-coins_butikk.pdf
    • https://uploads.strikinglycdn.com/files/a4c5992e-8dc7-439b-8151-43931ad06f65/wevigotagifewip.pdf
    • https://uploads.strikinglycdn.com/files/08ec4e7c-bb51-4ea5-805a-11ec3bd4814e/zazupube.pdf

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