Malicious PDF — malware analysis report

Static analysis result for SHA-256 269aff17fc465d8b…

MALICIOUS

PDF

54.8 KB Created: 2020-11-10 11:22:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46d218099508f24ad751d97cb4dadfa2 SHA-1: c3e4d2395d8566746c8e058d68b6233610167564 SHA-256: 269aff17fc465d8b99a0e9f3aead5dc20a8f912ab31cc91f17a027485895b196
212 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, identified as a link farm, directing users to external websites. One critical heuristic indicates a link to known malicious redirector infrastructure, and another flags the PDF as a potential phishing or trojan distribution vehicle. The presence of these links suggests an attempt to lead the user to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9022

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://cctraff.ru/strik?keyword=ap+gov+unit+1+vocabulary
    • https://wobafedufuj.weebly.com/uploads/1/3/4/0/134012960/fidonijutefurobunuke.pdf
    • https://cdn-cms.f-static.net/uploads/4370285/normal_5f8df5f2521e3.pdf
    • https://cdn-cms.f-static.net/uploads/4376619/normal_5f9943222efd3.pdf
    • https://vefotufujipewux.weebly.com/uploads/1/3/4/4/134401009/tabunidofitin_kukekematute_wavaguvezusunej.pdf
    • https://cdn-cms.f-static.net/uploads/4394061/normal_5f96a2cf21426.pdf
    • https://cdn-cms.f-static.net/uploads/4369343/normal_5f8c1e4830428.pdf
    • https://cdn-cms.f-static.net/uploads/4447877/normal_5fa64eff2eef1.pdf
    • https://cdn-cms.f-static.net/uploads/4369646/normal_5f96f42dc535a.pdf
    • https://cdn-cms.f-static.net/uploads/4369150/normal_5f89a9f64739a.pdf
    • https://cdn-cms.f-static.net/uploads/4366622/normal_5f877e385f577.pdf
    • https://cdn-cms.f-static.net/uploads/4479904/normal_5faa1a2e695c6.pdf
    • https://cdn-cms.f-static.net/uploads/4423429/normal_5fa82106aac80.pdf
    • https://xenifopiri.weebly.com/uploads/1/3/4/5/134507673/6530557.pdf
    • https://uploads.strikinglycdn.com/files/99f19474-3ecb-4581-9fcd-601bd3fa23ee/doweguwedetigiri.pdf
    • https://uploads.strikinglycdn.com/files/f2e04f94-f816-4f61-b5f1-1cb7eaecb15f/rirezesitu.pdf

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