Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7d1cfc787e4a0de…

MALICIOUS

PDF

64.0 KB Created: 2021-02-20 15:15:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: cd3fba7a08bad55d49f70171ea14438e SHA-1: 995cc37128e7054ad1d9f9eef31b2efd1ebc2fd5 SHA-256: f7d1cfc787e4a0deaf50fc87ff9f79c1d33905a9d77535a8da9973703d6a2830
126 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
  • 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/strik?utm_term=echo+cs+400+chain+file+size PDF link annotation
    • https://cdn.sqhk.co/fodexuxefeba/tmIjghh/93464542238.pdfIn PDF document text
    • http://helpforteam.com/669803738479lndl.pdfIn PDF document text
    • https://cdn.sqhk.co/kizofapekeku/ghWQWil/tifevumosorerari.pdfIn PDF document text
    • https://cdn.sqhk.co/vizakifito/bhbVha8/samsung_galaxy_wallpaper_gif.pdfIn PDF document text
    • https://cdn.sqhk.co/banuluwopote/igdWhby/81183050667.pdfIn PDF document text
    • https://cdn.sqhk.co/damukowabij/iaohi2x/39539028000.pdfIn PDF document text
    • https://cdn.sqhk.co/sopiloroda/gehjihj/kefipizufojefex.pdfIn PDF document text
    • https://cdn.sqhk.co/rojarimeg/i3Eih41/gijazixulenexaxoratub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467285/normal_600e6f7829b3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369626/normal_600ea0d82d9a9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454040/normal_5fe2b5aa8d494.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wotofuwib.epizy.com/zedobo.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/60785327495.pdfIn PDF document text
    • http://bumilamufitilu.epizy.com/10745039661.pdfIn PDF document text
    • http://xofawuriduk.epizy.com/xagurenemo.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_off0000bcf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCF7 5108 bytes
SHA-256: 6f1e6464b4b778e628832f14e56ca768379ad211308fc2176db5be381f8706b2
font_01_sfnt_off0000ce69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE69 10360 bytes
SHA-256: 7ebaa75dc8d8be8ec672cb76cc9a3be65f5bf8bb9a22c166a0d9546665db923c