Malicious PDF — malware analysis report

Static analysis result for SHA-256 86773d8cd6c17974…

MALICIOUS

PDF

55.7 KB Created: 2021-06-02 18:09:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d1be03651ac83fda9a989811b3c8d2d SHA-1: 9a940326c7788c564fb2c71ca0d379ca6422b11a SHA-256: 86773d8cd6c179743f55e809a808787f4b26200a1a9e53bd35b1ea3f64adecf3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a significant number of external links, identified as a link farm, which is a common tactic for SEO manipulation or distributing malicious content. The ClamAV detection and ML classifier further indicate malicious intent, likely related to phishing or trojan distribution. No scripts were extracted, but the presence of numerous external URLs suggests an attempt to redirect the user to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6973

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://garglob.ru/pbw?utm_term=how+to+get+an+auto+clicker+on+iphone+ios+13
    • https://static.s123-cdn-static.com/uploads/4374178/normal_5ff583b244bea.pdf
    • https://cdn-cms.f-static.net/uploads/4371267/normal_604cc99c55ba9.pdf
    • https://static.s123-cdn-static-d.com/uploads/4475727/normal_60b006c10c492.pdf
    • https://cdn-cms.f-static.net/uploads/4474992/normal_604fb1327005f.pdf
    • https://vaxinukosiju.weebly.com/uploads/1/3/4/6/134625250/tatako.pdf
    • https://cdn-cms.f-static.net/uploads/4484169/normal_603a21f166f0a.pdf
    • https://cdn-cms.f-static.net/uploads/4372681/normal_603d613f3ae7f.pdf
    • https://static.s123-cdn-static.com/uploads/4376629/normal_5fcf85b4c326f.pdf
    • https://static.s123-cdn-static.com/uploads/4409413/normal_60035ba3e2e70.pdf
    • https://static.s123-cdn-static.com/uploads/4384649/normal_600828fbabad0.pdf
    • https://cdn-cms.f-static.net/uploads/4373757/normal_600ddbb9ef781.pdf
    • https://cdn-cms.f-static.net/uploads/4500189/normal_605be938ae114.pdf
    • https://cdn-cms.f-static.net/uploads/4443598/normal_6025b5ed38fc0.pdf
    • https://cdn-cms.f-static.net/uploads/4488141/normal_601cdce9d0ccb.pdf
    • https://dibevoxatatot.weebly.com/uploads/1/3/1/1/131164568/mejibuzigixukajusete.pdf
    • https://cdn-cms.f-static.net/uploads/4408483/normal_606356beccafa.pdf
    • http://xedidovetaw.pbworks.com/f/xarixugalu.pdf
    • http://tusoxefum.pbworks.com/w/file/fetch/144474837/bridget_moynahan_real_height.pdf
    • http://jesababa.pbworks.com/w/file/fetch/144413976/75834922639.pdf

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