Malicious PDF — malware analysis report

Static analysis result for SHA-256 21015f9089e432aa…

MALICIOUS

PDF

82.9 KB Created: 2021-02-18 20:37:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: be1a1e522d8c2c046e6690718a9f8485 SHA-1: 4ec1835313473d4f3294ba493d2ffabfb8398473 SHA-256: 21015f9089e432aa4b9c036ef10eb27663c0b35b7c3af2fe96f89a624b6c5c8f
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://seumenha.ru/aws?utm_term=fender+twin+reverb+reissue+mods PDF link annotation
    • http://basvuruizleme.online/50_shades_freed_freea4noi.pdfIn PDF document text
    • https://cdn.sqhk.co/lepavenujal/uWiiXhc/tigelibepikokepe.pdfIn PDF document text
    • https://cdn.sqhk.co/sobexofap/jixoWhb/33642323471.pdfIn PDF document text
    • https://cdn.sqhk.co/riragimi/gUheHgc/run_rush_3d_mod_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491173/normal_5fc57518ecc11.pdfIn PDF document text
    • https://jodajapiguzok.weebly.com/uploads/1/3/2/7/132710756/75b0256f6b6.pdfIn PDF document text
    • https://xutezanepone.weebly.com/uploads/1/3/3/9/133999331/veveborenudekiv.pdfIn PDF document text
    • https://cdn.sqhk.co/mugapowejog/hhfssge/45137721185.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421957/normal_5fe9fe717ecda.pdfIn PDF document text
    • https://cdn.sqhk.co/gupuwiwi/gdxSwhh/fun_run_3d_multiplayer_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/rojarimeg/50pgiDA/zombie_killer_2d_mod_apk_android_1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412391/normal_5fe22d717a1c3.pdfIn PDF document text
    • http://mailedflkf.site/red_hat_ansible_documentationp4649.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/bopuxosavubare/mtv_movie_awards_2019_musical_performances.pdfIn PDF document text
    • https://s3.amazonaws.com/vovabagubajegeb/rise_of_civilization_hero_skill_guide.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_off0001079a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1079A 4976 bytes
SHA-256: 73a7ead4502c404a6134c4c60b18c7c3d8fa1c3836393bb45f5b66722243c1d7
font_01_sfnt_off00011887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11887 11316 bytes
SHA-256: ee56f0ce9eae34730ef7826197d0313497eaf4ef32b59524ccc4ef3b56da28bf