Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3bc60dc3e96f600…

MALICIOUS

PDF

57.2 KB Created: 2021-03-01 04:42:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 40a4e3a20ea98363b99ac5b8a03e4a28 SHA-1: bb48ca2e8967597e82cfc1ad8c20f9b9fb058039 SHA-256: c3bc60dc3e96f6004851b271a0c93ff6f0866ecdfc0dfacbaedb2d24407ac5b0
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9433

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://crophysi.ru/award?keyword=foreshadowing+in+julius+caesar+act+1+scene+3 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4422135/normal_603358ef7e6e1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453579/normal_5fc62d7e43859.pdfIn PDF document text
    • https://cdn.sqhk.co/wefekoferu/0ijhjhf/mlb_perfect_inning_2020_best_players.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388432/normal_5fd8cd453d96e.pdfIn PDF document text
    • https://cdn.sqhk.co/letojeka/chgjcWa/jedojurami.pdfIn PDF document text
    • http://fasekafalig.scienceontheweb.net/65669901132.pdfIn PDF document text
    • http://wegaturagifo.getenjoyment.net/movie_maker_pro_windows_10_tutorial.pdfIn PDF document text
    • http://xevusezes.medianewsonline.com/84065939183.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369514/normal_5fd6c2248c32e.pdfIn PDF document text
    • https://cdn.sqhk.co/nixenexax/hbgciaq/74471762646.pdfIn PDF document text
    • https://cdn.sqhk.co/pekobenew/hdYjfhh/sewapanikif.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422658/normal_60029de88750e.pdfIn PDF document text
    • http://xolevusafo.myartsonline.com/wejesedazukisufuvejidi.pdfIn PDF document text
    • http://dopovis.myartsonline.com/nemani.pdfIn PDF document text
    • http://nesitobika.rf.gd/update_huawei_p9_lite_to_android_8.pdfIn PDF document text

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