Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf3de80122515511…

MALICIOUS

PDF

48.0 KB Created: 2021-04-04 20:55:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 9cc1b8f998c36f5c25ab71f36b6e94ab SHA-1: afda2fa277d2979d76d49011bbcb5ba080a68f8b SHA-256: cf3de80122515511c911ea19a092c97cfb5859b58379b825bb7026d30c4784bc
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by 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 0.7665

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.
  • 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://jumiwimov.ru/123?utm_term=bootstrap+4+cdn+starter+template PDF link annotation
    • http://agent-ritual495.online/champion_dual_fuel_generator_7500_reviews5685u.pdfIn PDF document text
    • https://cdn.sqhk.co/bujasugawo/gdsjfjj/paris_texas_filming_locations.pdfIn PDF document text
    • http://item-mask.top/584187861696kxh.pdfIn PDF document text
    • https://famogapev.weebly.com/uploads/1/3/1/6/131606489/mujekiregog.pdfIn PDF document text
    • https://cdn.sqhk.co/netimupoxojo/Phehggc/1055519445.pdfIn PDF document text
    • https://cdn.sqhk.co/kuniremolu/rl1gfhd/32762247515.pdfIn PDF document text
    • https://xoxujodega.weebly.com/uploads/1/3/4/3/134363828/da6602f8.pdfIn PDF document text
    • https://sozogamawi.weebly.com/uploads/1/3/1/6/131636736/856750.pdfIn PDF document text
    • https://cdn.sqhk.co/porosobof/egjihzg/zesizafovenijeza.pdfIn PDF document text
    • https://cdn.sqhk.co/wemopizajazo/EDVMQgi/street_racing_death_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/falupuvevore/chfijhi/gaporet.pdfIn PDF document text
    • https://cdn.sqhk.co/womafafowix/hesqFTz/funozosefuj.pdfIn PDF document text
    • http://eurofamily.pro/36395779533tlag9.pdfIn PDF document text
    • http://dumurosaderured.rf.gd/autonomous_robots_george_bekey.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/68793560644.pdfIn PDF document text
    • http://kuxogazixup.rf.gd/list_of_aerobic_bacteria.pdfIn PDF document text
    • http://dukizovisepo.rf.gd/fl_studio_12_download_for_pc_windows_7.pdfIn PDF document text
    • http://wetebufub.rf.gd/tebogagubenevoxibozedut.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/carers_support_grant_form_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/vaaste_video_song_hdyaar._com.pdfIn PDF document text

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