Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b4656f9506ac626…

MALICIOUS

PDF

50.6 KB Created: 2021-02-15 02:17:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 1aabc2b1914b3b8ae398643757110b2a SHA-1: 86028cc502a3e0eca514e614a7277e4efe13f4a6 SHA-256: 3b4656f9506ac626df603e8114592a17a162272481f835287f4ac62006918e58
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous external links, many pointing to disposable hosting and employing UTM parameters, indicative of a link farm used for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were extracted, the presence of external URLs and the document's structure point towards an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6925

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://druttle.ru/aws?utm_term=find+the+noun+in+a+sentence+worksheet PDF link annotation
    • https://kizerovum.weebly.com/uploads/1/3/4/7/134747257/motikutiven_buton_tilevutugev.pdfIn PDF document text
    • https://cdn.sqhk.co/jotapepikota/cjjifih/csi_miami_rex_linn.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvidomanale/jagipAH/rope_frog_ninja_hero_hack_money.pdfIn PDF document text
    • https://cdn.sqhk.co/bikegola/SujanYA/desktop_recorder_app_free.pdfIn PDF document text
    • http://lizubujakus.22web.org/8372827147.pdfIn PDF document text
    • http://xasunibi.iblogger.org/thank_you_email_after_job_interview_template.pdfIn PDF document text
    • http://feruwikabi.iblogger.org/xawetalewofuvovarofewime.pdfIn PDF document text
    • http://debukigezi.epizy.com/biotransformation_of_steroids.pdfIn PDF document text
    • http://pikusotanuw.rf.gd/furmark_mac_os.pdfIn PDF document text
    • http://tobisijukufoki.epizy.com/beethoven_symphony_no_9_piano_sheet_music.pdfIn PDF document text
    • http://vonanovab.epizy.com/31413983883.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/chamma_chamma_song_free_mr_jatt.pdfIn PDF document text
    • http://vudatuvabejosix.epizy.com/bahubali_3_song_naa.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/performance_edge_dance_school.pdfIn PDF document text
    • http://teguzudimotu.epizy.com/snowboard_bindings_fitting_guide.pdfIn PDF document text

Related samples 8

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