Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c02983efdb6ce75…

MALICIOUS

PDF

72.8 KB Created: 2021-02-07 08:29:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 64d879f0e89750c875e53f9c82e2f553 SHA-1: 5747420d21eeebb6a239ae52b140458fc402c2ef SHA-256: 5c02983efdb6ce75631c121fa6f208af2c5e32aca64be48b628634491c5a9221
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://jottigo.ru/123?utm_term=plazma+burst+2.5+2020 PDF link annotation
    • https://cdn.sqhk.co/wefenosefob/gHght2B/two_dots_nano_appeared_on_my_iphone.pdfIn PDF document text
    • http://lnstagramcopyrightcenter.com/dosubabifx17sr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450421/normal_5fc873efbec81.pdfIn PDF document text
    • https://cdn.sqhk.co/tinupolureg/eicK4yQ/toes_cramped_up.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452862/normal_6007279677075.pdfIn PDF document text
    • https://cdn.sqhk.co/gituridewo/Difhhia/grand_theft_auto_5_cheats_ps3_online.pdfIn PDF document text
    • https://gisixumaxen.weebly.com/uploads/1/3/1/8/131856636/juxizafuxozeno.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384304/normal_5fe10f73306e3.pdfIn PDF document text
    • http://emmetrix.net/87631713433h5554.pdfIn PDF document text
    • http://lnstagramverificationbadge.com/kral_kaybederse_kenannzaa7.pdfIn PDF document text
    • https://cdn.sqhk.co/bodevoposuji/bGjj9Kt/skater_xl_switch_gameplay.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/WKbk59s/94939380484.pdfIn PDF document text
    • https://remurefovedelag.weebly.com/uploads/1/3/1/8/131860204/7326566.pdfIn PDF document text
    • https://cdn.sqhk.co/riwaxagi/gTJierp/mibewokimevotinitiz.pdfIn PDF document text
    • https://cdn.sqhk.co/numovasovev/a2gfCih/2296194881.pdfIn PDF document text
    • https://cdn.sqhk.co/sinemajud/dhjJgfs/63194484313.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450641/normal_6019fa737ec22.pdfIn PDF document text
    • https://kodidorimo.weebly.com/uploads/1/3/1/3/131380292/jevax_texuligapefuwox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e056.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE056 5452 bytes
SHA-256: 5b981d007af0f75b0f0237d5b085e3855bdd4bf2e54f1db8dacb92af95256e38
font_01_sfnt_off0000f2d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D5 10348 bytes
SHA-256: 040b118a0e2ca59eb92c29bf68c6c956f9ca5c545639dd64aaa6dc683ef2ce58

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