Malicious PDF — malware analysis report

Static analysis result for SHA-256 31d0beb27bc91bb9…

MALICIOUS

PDF

53.2 KB Created: 2021-02-28 21:30:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 7f3ca9c545585c5678a8c518c9820ee9 SHA-1: 122f0a710e81ff2c0367330fa58ce08b6e44da76 SHA-256: 31d0beb27bc91bb9040c8d89dfa45daf0a417ea57ad60ce98f41d29a6f0bd232
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to disposable domains and link farms, indicating a likely attempt to redirect users to malicious sites. The ML classifier and ClamAV detection strongly suggest malicious intent, consistent with phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF designed to exploit user curiosity or search queries.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8576

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ponafet.ru/strik?utm_term=breadman+ultimate+plus+tr2500bc+replacement+parts PDF link annotation
    • https://cdn.sqhk.co/fewibefanid/gejbmgh/flip_a_coin_100_times_simulator.pdfIn PDF document text
    • https://cdn.sqhk.co/zumedizojas/y7hjNhg/poughkeepsie_train_station_to_grand_central.pdfIn PDF document text
    • http://lilubaxubaxulu.sportsontheweb.net/bosch_vision_500_series_dryer_parts_diagram.pdfIn PDF document text
    • http://siwosupegejolop.medianewsonline.com/68007723285.pdfIn PDF document text
    • https://cdn.sqhk.co/nizidevogaka/ihdLtku/murder_in_the_alps_chapter_2_hints.pdfIn PDF document text
    • https://vojonabof.weebly.com/uploads/1/3/1/3/131383251/nijinaz.pdfIn PDF document text
    • http://kopuvimu.scienceontheweb.net/best_mackie_analog_mixer.pdfIn PDF document text
    • https://katodelof.weebly.com/uploads/1/3/6/0/136051175/cae33a0603620.pdfIn PDF document text
    • http://mazikopipovix.mywebcommunity.org/sony_alpha_3000_manual_espaol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448346/normal_5fd7fa174c39f.pdfIn PDF document text
    • http://xekabotiwuker.atwebpages.com/bomomarepiw.pdfIn PDF document text
    • http://nukilaba.myartsonline.com/xejenaj.pdfIn PDF document text
    • https://s3.amazonaws.com/miledu/behringer_xr18_user_manual.pdfIn PDF document text
    • http://nejimafalun.onlinewebshop.net/how_much_is_red_cross_cpr_certification.pdfIn PDF document text
    • http://vorisenunajix.myartsonline.com/stairway_to_heaven_chords_during_solo.pdfIn PDF document text
    • https://s3.amazonaws.com/jazamerijekufol/ski_garmisch_partenkirchen_snow_report.pdfIn PDF document text
    • http://xuvekixofeku.onlinewebshop.net/basoxadafo.pdfIn PDF document text

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