Malicious PDF — malware analysis report

Static analysis result for SHA-256 a954780e593b7a2f…

MALICIOUS

PDF

65.4 KB Created: 2021-02-10 21:58:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 73dd529fea86be1bc9098390e0aea743 SHA-1: add2e89f88ebc4c55926dcacd2ee388a243b3db2 SHA-256: a954780e593b7a2f7b6750333c0f1a21b8e2995483143cb7d06bf5ab41a712e7
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/aws?utm_term=authority+letter+format+for+handover+document PDF link annotation
    • https://cdn.sqhk.co/wokinuge/hjGthhh/roblox_promo_codes_list.pdfIn PDF document text
    • https://cdn.sqhk.co/sovanoniwuva/hijg1Dn/angry_birds_blast_mod_apk_latest_version.pdfIn PDF document text
    • http://train-home.ru/on_a_vol_mon_vlo6fi7b.pdfIn PDF document text
    • https://cdn.sqhk.co/vobevufubito/CLaXvgd/mars_trine_mars_synastry_tumblr.pdfIn PDF document text
    • http://nesobaka9.xyz/48454753253p9pf.pdfIn PDF document text
    • http://br1.red/fiwizelafuwaxovofarmqy8d.pdfIn PDF document text
    • http://onlinesos.tech/lezavolagukwrxt.pdfIn PDF document text
    • http://zamuxodub.22web.org/23494611936.pdfIn PDF document text
    • http://baltika-trans.ru/nice_guidelines_on_treatment_of_hypertensionr053v.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416500/normal_5ffcdef2d4b6f.pdfIn PDF document text
    • http://hookup671.site/dexless_warrior_guide_maplestoryz36cx.pdfIn PDF document text
    • http://lnstagramverifiedbadge-form.com/wojodinosebuxoxelugivet8zzk.pdfIn PDF document text
    • https://cdn.sqhk.co/zekuxemelop/fLPlgjj/85518925510.pdfIn PDF document text
    • http://adminhalil.com/bibekinodawuludirizieesv0.pdfIn PDF document text
    • http://ostanni.fun/lerosudogovld5a5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mujunuge.rf.gd/taxujulupal.pdfIn PDF document text
    • http://kixiwuru.epizy.com/lujopazavixujetedom.pdfIn PDF document text
    • http://peguretunemidom.rf.gd/evaluating_algebraic_expressions_worksheet_grade_8.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_off0000c4e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4E8 5236 bytes
SHA-256: 952a1a4e8490b9ee328a32ead2f43860f7a02993e430b9dfd185ce49e3be8b82
font_01_sfnt_off0000d698.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD698 9904 bytes
SHA-256: e4289501534ba26e79abd689bd962b3f0ee0e1905a17987bc32e554f305f5247