Malicious PDF — malware analysis report

Static analysis result for SHA-256 10661fd14a3a85dc…

MALICIOUS

PDF

69.2 KB Created: 2021-03-02 17:23:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e72dfc3efcac604a9311bb3dd76fcaad SHA-1: e0fb75b887cb212466a0dfcc93f90cacb89ce593 SHA-256: 10661fd14a3a85dcac5cfa2cda0d0590c5e38d63ec80705576bc74bf38841561
244 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/award?keyword=garmin+astro+220+dog+collars In PDF document text
    • https://jezuvafu.weebly.com/uploads/1/3/5/3/135348480/penagujore_puxaseso_dixobabugixitef.pdfIn PDF document text
    • http://wide-do.top/actualizacion_android_10_xiaomi_mi_a22v7av.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449965/normal_60004361ed0a3.pdfIn PDF document text
    • https://cdn.sqhk.co/dorejewibiz/ghibPii/the_adventure_of_sharkboy_and_lavagirl.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxafopagad/gghKnvF/comprar_diamantes_free_fire_efecty.pdfIn PDF document text
    • https://cdn.sqhk.co/baresupujar/75hjJgq/short_business_plan_for_start_up_record_company.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501028/normal_6019dbd088305.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426822/normal_6017168d9af62.pdfIn PDF document text
    • https://juvetobewuneted.weebly.com/uploads/1/3/3/9/133997509/wusawotavoligus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379048/normal_601c97d11695a.pdfIn PDF document text
    • https://cdn.sqhk.co/pekuwalixeso/iexdjlH/babowojoduradamade.pdfIn PDF document text
    • http://card2card-perevod24.site/decathlon_boxing_gloves_size_guidenx3if.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/figidireki/bivomibepizunaxa.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_off0000d240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD240 5564 bytes
SHA-256: f4213fdf1d9090b617c18a84faebd2763d620049da1218aa8fc4d73ed03007a1
font_01_sfnt_off0000e513.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE513 10092 bytes
SHA-256: 2949b7cef82f03415ac119f092d8846149a67a5f03455f45af6bcd43f6c61530

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