Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae99c05ea97fe57b…

MALICIOUS

PDF

71.1 KB Created: 2021-02-23 08:24:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8ea1d270d5972936af07447d920386f1 SHA-1: fd57346ab45a637825e489998128d965c06f84c9 SHA-256: ae99c05ea97fe57b12b137f8ec85fa048fb3d77109547a79085cce12a294e07b
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://seumenha.ru/aws?utm_term=manual+de+calidad+de+una+empresa+de+alimentos+ejemplo PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4380088/normal_6002898419431.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374207/normal_5fdcbbbc79d84.pdfIn PDF document text
    • https://cdn.sqhk.co/vobevufubito/MLjiijP/59510304601.pdfIn PDF document text
    • http://pet-guru.shop/745900583285xug.pdfIn PDF document text
    • https://cdn.sqhk.co/xamitarerivu/EFjXjhC/zoruporuzukuletuvet.pdfIn PDF document text
    • https://cdn.sqhk.co/mujawiru/hc2Hgdc/daniel_d_music_app.pdfIn PDF document text
    • http://reduslimitalia-official.website/succession_planning_template_nhs7wy1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457312/normal_6033822908649.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385004/normal_601bbb5f8c41c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476001/normal_5ffd5d19ae921.pdfIn PDF document text
    • https://rifidikebipe.weebly.com/uploads/1/3/0/9/130969129/3324408.pdfIn PDF document text
    • https://cdn.sqhk.co/bovutolomevo/oLFR5ha/friendly_ig_login.pdfIn PDF document text
    • http://13millions-warzone.store/87676815263ags0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489722/normal_60131cf2f0327.pdfIn PDF document text
    • https://wovovude.weebly.com/uploads/1/3/1/3/131397940/e493c0d6.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_off0000d575.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD575 5300 bytes
SHA-256: 46418e3a279fec87bafd621261385c9df89c6f739c14f9837e14fd04e5c1659a
font_01_sfnt_off0000e774.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE774 11760 bytes
SHA-256: 7ccef3e44850d66adbaace8ef026b63d14c73baa7fd059913fd553eca598523f