Malicious PDF — malware analysis report

Static analysis result for SHA-256 42f7a29e544557f3…

MALICIOUS

PDF

71.9 KB Created: 2021-02-23 09:40:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2cae92d2c92067dc484e9ff05d85276b SHA-1: a04b9d9aee6325f2fc5722c8553a234387e3bb2d SHA-256: 42f7a29e544557f3c78fc5c65216d6203ea6f8f8a5a8da47fa4e448789a153c0
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 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://yafferge.ru/wb?keyword=notas%20de%20canciones%20tristes%20en%20piano In PDF document text
    • http://kvrovk.xyz/how_often_transmission_fluid_changep2kw2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472198/normal_6017245d348e0.pdfIn PDF document text
    • https://cdn.sqhk.co/levowexesu/QDljggf/coffin_nails_press_on.pdfIn PDF document text
    • https://salapabozob.weebly.com/uploads/1/3/5/3/135326799/f069a.pdfIn PDF document text
    • https://wojedebaroz.weebly.com/uploads/1/3/1/6/131637691/0f1922d8.pdfIn PDF document text
    • http://hookup158.fun/cartoon_song_mr_jattybhqf.pdfIn PDF document text
    • http://lojasamericanasbr.com/fukibarabaxilozexogiulpkh.pdfIn PDF document text
    • http://prizinsta.info/bobujoduxedenoxudedewgdj8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478127/normal_602bda0fc548f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393755/normal_5ffb6dbd40295.pdfIn PDF document text
    • http://stikc.xyz/zuromesadr8jdf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492275/normal_5ff48d0339cac.pdfIn PDF document text
    • http://afracheat6.xyz/al_pacino_scarface_movie_freep6f69.pdfIn PDF document text
    • http://istlan.fun/budonekinene9r72v.pdfIn PDF document text
    • https://doruxajowivabog.weebly.com/uploads/1/3/4/8/134870444/jexidiko-busiral-sovipuru-bodefowatumomem.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_off0000daa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAA0 5004 bytes
SHA-256: 60af35ea730ecf710d76038ed9c7220943e8441c3408af8655f8c77dad95c1e1
font_01_sfnt_off0000ebb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB5 11456 bytes
SHA-256: 6f01935446a154da840f59777dacf743b010de75cce6b2693c80a1c24dac7223