Malicious PDF — malware analysis report

Static analysis result for SHA-256 03b1bbd8bcb369a6…

MALICIOUS

PDF

85.4 KB Created: 2021-03-15 22:37:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 74da4c6c2239a8a42adfff9122311410 SHA-1: 2083e67254e96c99dde83a54d188c31eb346a173 SHA-256: 03b1bbd8bcb369a622afd8ad33ff1d61928e718cd5bfcec67c8f9fdfd8587b76
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9991

Heuristics 5

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://seumenha.ru/wix?keyword=bike+racing+3+unblocked PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4490752/normal_5fd9874ee7c82.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377401/normal_6007457d60449.pdfIn PDF document text
    • https://cdn.sqhk.co/lupokuna/vhfS4hj/4937920542.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483851/normal_5fd3cd0153a26.pdfIn PDF document text
    • http://jalazekesofijot.medianewsonline.com/what_size_needle_for_insulin_pen.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380413/normal_5ff4c47f83a28.pdfIn PDF document text
    • http://fumatiw.mypressonline.com/91935585562.pdfIn PDF document text
    • http://jozipuvuwuzaj.mywebcommunity.org/pdf_document_could_not_be_saved_a_number_is_out_of_range.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411479/normal_5fef12748b95f.pdfIn PDF document text
    • http://jonavaruxeri.22web.org/apex_development_report.pdfIn PDF document text
    • https://cdn.sqhk.co/tejosepu/fXxQjbU/kifesi.pdfIn PDF document text
    • http://lowufadit.scienceontheweb.net/18841427038.pdfIn PDF document text
    • https://cdn.sqhk.co/kenoramof/0gcichi/best_homemade_detox_for_belly_fat.pdfIn PDF document text
    • http://jiwapadenejeza.getenjoyment.net/clash_of_kings_strategy_game_guide.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/49ad9a3b-5e32-4663-be4f-d368923afdc1/how_to_assemble_a_total_gym_platinum.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/35605453254.pdfIn PDF document text
    • https://s3.amazonaws.com/xonaxevetaf/aerospace_industries_association_annual_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdd3f39a-d96c-495f-8c67-51b36943dd5e/states_of_matter_word_search.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bad7e090-a544-4c98-ad14-91b39be6f92d/sapulegurunimugitome.pdfIn PDF document text
    • http://runopokasuvi.epizy.com/sufujoronifexipopiv.pdfIn PDF document text
    • http://kosirokuki.epizy.com/14284044515.pdfIn PDF document text
    • https://s3.amazonaws.com/dewazewokib/wesobenuwutafewedoso.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/boss_movie_song_ming.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24d08473-d58c-4176-98f4-34173bea73a7/how_to_test_motherboard_failure.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000110a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110A7 5344 bytes
SHA-256: 41d74485756ddfe17533936be17f628e8b8a2db8ea48b3f97b4b41cf9f3ae99b
font_01_sfnt_off000122e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122E4 10896 bytes
SHA-256: bc4b81234350bfafbdc6425cd77ef1fa0e4b6b4a745b1c39a93e76659aa217f2

Open this report in the interactive analyzer, or submit your own file for analysis.