Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ef4449fd821b3e6…

MALICIOUS

PDF

57.4 KB Created: 2021-01-06 15:08:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e41680b5b947ef7511a4533de28f0fc8 SHA-1: f01e7d1387ba788328017799a35b24da98ed636a SHA-256: 7ef4449fd821b3e6e6b569215183fdc41324c7d93dd5840b63f2be0edb535bcc
212 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one identified as a known malicious redirector. The heuristic firings indicate this PDF is part of a link farm, likely designed to direct users to malicious sites. While no scripts were extracted, the presence of embedded URLs and the ClamAV detection suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6200

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://ggtraff.ru/aws?utm_term=endless+legend+guide+faction
    • https://static.s123-cdn-static.com/uploads/4371265/normal_5fcb15742cb62.pdf
    • https://cdn.sqhk.co/tovisegag/aifRgjg/siren_head_call_simulator_juego.pdf
    • https://bizitodavil.weebly.com/uploads/1/3/4/3/134321392/bulaxewawog.pdf
    • https://cdn-cms.f-static.net/uploads/4387817/normal_5faac299e8d28.pdf
    • https://cdn.sqhk.co/zisubiziwu/ifajhiZ/42366287482.pdf
    • https://uploads.strikinglycdn.com/files/22cda7b0-c680-4cec-936d-31bd5f7ad97f/71338721726.pdf
    • https://s3.amazonaws.com/wejuvono/ralirolixur.pdf
    • https://s3.amazonaws.com/jasipefulaxiduj/sisife.pdf
    • https://uploads.strikinglycdn.com/files/d9da87e7-6dc5-4357-b435-74e25530e091/femugadizidepadinu.pdf
    • https://s3.amazonaws.com/felasorarabipis/functional_skills_maths_level_1_revision.pdf
    • https://s3.amazonaws.com/novifamigot/43800523809.pdf
    • https://s3.amazonaws.com/kavalukato/futageputiti.pdf