Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdf9a1703c8c5e7a…

MALICIOUS

PDF

66.8 KB Created: 2021-03-01 17:22:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 96b891eccfa3a77e40509a572a54d1f0 SHA-1: 2b9007e932f10e1469a94e16f105a48c00bada4f SHA-256: cdf9a1703c8c5e7a73a4cbb260f61169ea4c9526ff0f5ebb582abde773369a1d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and an external URI pointing to a suspicious domain, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious activity, likely leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7653

Heuristics 4

  • 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
  • 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://resalured.ru/award?keyword=valentine+one+radar+detector+installation
    • https://cdn.sqhk.co/jilebodetifa/jjfihgj/57937728105.pdf
    • https://static.s123-cdn-static.com/uploads/4369656/normal_5ff13fb9ef43b.pdf
    • https://tevitoretej.weebly.com/uploads/1/3/2/6/132680933/perenidobajoretobak.pdf
    • https://tudaluvakagovax.weebly.com/uploads/1/3/4/6/134614365/nalugano.pdf
    • https://lorotorerusut.weebly.com/uploads/1/3/1/4/131452969/kivereb-rifabuzadamumuj-luzipabadanif-seseji.pdf
    • https://cdn.sqhk.co/pigexebobe/fu3iigc/argentine_football_managers.pdf
    • https://tenosufude.weebly.com/uploads/1/3/1/4/131455069/669229.pdf
    • https://tidemipevu.weebly.com/uploads/1/3/0/7/130740592/peruji-nixexovipubef-sowuzololatofe-kupexof.pdf
    • https://luxufaxunixepu.weebly.com/uploads/1/3/4/5/134584211/nununajebeleve.pdf
    • https://cdn.sqhk.co/gepumenujeme/ajgibje/23625310206.pdf
    • http://gojawufeki.getenjoyment.net/pamumumiriloriluwajapekum.pdf
    • https://cdn.sqhk.co/vowibesep/7yEhht1/weekends_only_st._louis_manchester.pdf
    • http://ladirojenovezoj.mygamesonline.org/47196999228.pdf
    • https://rurefisofe.weebly.com/uploads/1/3/5/3/135325463/7f796826e0af.pdf
    • https://kopaluzakiletal.weebly.com/uploads/1/3/0/7/130739322/gakokare-kojavufoxu.pdf
    • https://s3.amazonaws.com/davubewu/fagexegubiza.pdf

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