Malicious PDF — malware analysis report

Static analysis result for SHA-256 425fb0dcb5d93b66…

MALICIOUS

PDF

61.0 KB Created: 2021-02-10 14:19:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 41521c6eb61cdae0d4885c778420283e SHA-1: 789c711e5a0aa81ff18a86ad11f5c56fdb57a3c9 SHA-256: 425fb0dcb5d93b66d0f84002dd14023d866c277ff552dc486345962e473e2a33
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/aws?utm_term=playboy+meme+template+tamil PDF link annotation
    • http://store50off.info/tupuvagosajolpg1ae.pdfIn PDF document text
    • http://springwin.space/jowijozipiw691x.pdfIn PDF document text
    • http://naturwow.space/tatojodotakegowasog4la1o.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384307/normal_5ff54331be2d0.pdfIn PDF document text
    • http://mazafaka69pussy.online/pixel_art_tattoo_sandbox_color_by_numberhpbue.pdfIn PDF document text
    • https://cdn.sqhk.co/riwifesineji/jhe8icV/red_rose_wallpaper_for_mobile.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486748/normal_5ff13f24bc42f.pdfIn PDF document text
    • https://cdn.sqhk.co/borefigux/q0ThcFw/dunukujasorumojej.pdfIn PDF document text
    • https://cdn.sqhk.co/tisufupujeli/dZBQmFb/npw_frog_tape_dispenser.pdfIn PDF document text
    • https://cdn.sqhk.co/tefulobesa/8lGcjig/30526849388.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408321/normal_600e76669b3dc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420238/normal_5fee4289a7a86.pdfIn PDF document text
    • https://cdn.sqhk.co/befozaxulot/ghidZmD/33365695620.pdfIn PDF document text
    • https://wubigunes.weebly.com/uploads/1/3/4/5/134507070/9eed20c57.pdfIn PDF document text
    • http://nat-yoga.space/bejovomiduxekekeyqw.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_off0000b531.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB531 4936 bytes
SHA-256: a013e31cb47f70f4a1fe4b05d6794403879489ebce2456471cba418e789d6bf7
font_01_sfnt_off0000c5ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5EE 9852 bytes
SHA-256: 06c2e84d943a60bef705185603deb32df0fd48ff46b18162b06b8638da7637a0