Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7fbd14e5db82917…

MALICIOUS

PDF

70.2 KB Created: 2021-02-08 22:48:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: e913b358ab9a7fc1890d27111b2472c7 SHA-1: 366ec3240ae7202586a0e9efae511d81eb5e965b SHA-256: b7fbd14e5db82917aec3768c9acc11d867a3cd755edee6255f5ff9ad2a5d8d15
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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
  • 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://bologen.ru/123?utm_term=contact+clan+lavellan+guide PDF link annotation
    • http://itclick.pro/31808390895vsxqy.pdfIn PDF document text
    • https://naziwimirup.weebly.com/uploads/1/3/4/3/134371197/vonulip.pdfIn PDF document text
    • http://vezerfa.xyz/gem_mining_in_cherokee_north_carolina3wl67.pdfIn PDF document text
    • https://cdn.sqhk.co/piwizogir/7WheWjj/67683522215.pdfIn PDF document text
    • https://cdn.sqhk.co/waladoved/jNOysjh/mogidiwiberub.pdfIn PDF document text
    • https://cdn.sqhk.co/naxokujim/dSBgfAy/jirowowifewofawemer.pdfIn PDF document text
    • https://cdn.sqhk.co/xemugugafot/hbXm7ts/voposem.pdfIn PDF document text
    • https://cdn.sqhk.co/gupuwiwi/cjaMgc8/vorozas.pdfIn PDF document text
    • https://cdn.sqhk.co/niramojiga/hcYlgeL/roblox_gift_card_generator_download.pdfIn PDF document text
    • https://cdn.sqhk.co/zajujuva/Vjaihig/office_foundation_day_quotes.pdfIn PDF document text
    • https://dejutuzalusabi.weebly.com/uploads/1/3/4/8/134869317/maposotusas.pdfIn PDF document text
    • https://cdn.sqhk.co/gunonutib/ejil5z7/random_girl_video_calling_websites.pdfIn PDF document text
    • http://herss.space/kaantasan_ng_pang_uri_worksheets_grade_7hirkl.pdfIn PDF document text
    • http://1freedom.space/javascript_create_blob_from_urlpw9ce.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/kivelafejisupiz.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/ramorunawajazuxozar.pdfIn PDF document text
    • https://s3.amazonaws.com/kobivimelelo/roller_chain_guide_strips.pdfIn PDF document text
    • https://s3.amazonaws.com/potamotaz/weather_report_in_delhi_now.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_off0000d859.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD859 4796 bytes
SHA-256: aa9796a3c45add8ea4edb68fffbc97896cec5c1abe653147a7b6bd040f249f98
font_01_sfnt_off0000e8c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C0 10364 bytes
SHA-256: b29832a2c96d5b7539c42fd075cd2c5f86d4f0522e88cbcee4b2025085cbf9e4

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