Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb225d18768e7729…

MALICIOUS

PDF

57.1 KB Created: 2021-06-07 13:31:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79ed8356192ea787f8a515b23cf78eb9 SHA-1: 5fa92b33a922c65dd2d46168e344f21b0273bbba SHA-256: eb225d18768e77299e6958254c25aa2ad8175b56eb331961017f73ed251dc8e8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of external links, identified as a link farm, suggesting a malicious intent to redirect users to potentially harmful websites. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a phishing or SEO manipulation tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6420

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://smidgel.ru/pbw?utm_term=what+is+an+example+of+selective+perception
    • https://cdn-cms.f-static.net/uploads/4470385/normal_601dca2f85306.pdf
    • https://cdn-cms.f-static.net/uploads/4446635/normal_5fd1d8efdc2e5.pdf
    • https://parafobosa.weebly.com/uploads/1/3/1/8/131857791/lutinosuxafojov.pdf
    • https://xiwevejuvufevi.weebly.com/uploads/1/3/1/3/131380641/nototebedorex.pdf
    • https://static.s123-cdn-static.com/uploads/4481157/normal_5fe1fae933276.pdf
    • https://demimawuna.weebly.com/uploads/1/3/5/3/135389973/809c5b587af756.pdf
    • https://sazomoravevak.weebly.com/uploads/1/3/0/9/130969829/b4814fccce9c860.pdf
    • https://lokejefu.weebly.com/uploads/1/3/5/3/135301848/gozumifezi.pdf
    • https://tovalowu.weebly.com/uploads/1/3/4/3/134375552/1546019.pdf
    • https://static.s123-cdn-static-d.com/uploads/4466151/normal_60b3d24b1685c.pdf
    • https://xomupufemi.weebly.com/uploads/1/3/4/3/134322732/labasakipap_vimemidubajerik_xowajovasofas_dolobewilo.pdf
    • https://pebizadovabunal.weebly.com/uploads/1/3/4/7/134711288/gebexam.pdf
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/8539002.pdf
    • https://cdn-cms.f-static.net/uploads/4498366/normal_606457f7699df.pdf
    • https://static.s123-cdn-static.com/uploads/4383561/normal_5fd092dc40794.pdf
    • https://uploads.strikinglycdn.com/files/18180674-78d2-4595-ba1b-a00591ca944e/can_you_get_monthly_dividends.pdf
    • https://uploads.strikinglycdn.com/files/8ccb0529-9b26-4354-9d62-9870ab183cb8/19677907849.pdf
    • https://uploads.strikinglycdn.com/files/cb5a9bd9-d871-4ed1-a974-7e7cd980d185/pebiwowebanulabopiba.pdf
    • https://uploads.strikinglycdn.com/files/8520854b-7892-4d58-9b58-bbe8c7d5066c/wouxun_kg-uvd1p_software_windows_10.pdf
    • https://uploads.strikinglycdn.com/files/ae7c88f7-748e-4f3e-a1b7-80cda49ab822/89385946018.pdf
    • https://uploads.strikinglycdn.com/files/cb730420-f7b5-4f1f-950e-0d256a40632a/raxugurebesaboleguk.pdf

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