Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9a377aa6e52b98f…

MALICIOUS

PDF

72.7 KB Created: 2021-03-02 13:23:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a1166ccaaa94e85011e53a6f98cb11aa SHA-1: bd3fab38158cadd4b058c4d5551088cacb2c4e98 SHA-256: a9a377aa6e52b98f656ff83b4dc199ff3ae242306104735cc901cab98853f77c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://gimoguvi.ru/wb?keyword=how%20much%20does%20a%20maid%20get%20paid%20an%20hour PDF link annotation
    • http://blue-tick-central.com/2911530183511din.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416671/normal_5ff9c94799b2d.pdfIn PDF document text
    • http://kpovli.ru/32249543993yfr52.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444636/normal_5fc7b6ce68ffc.pdfIn PDF document text
    • http://nageramuvepom.mywebcommunity.org/20841073544.pdfIn PDF document text
    • http://budokudepa.scienceontheweb.net/tigifemazodokuvenugitewot.pdfIn PDF document text
    • https://cdn.sqhk.co/neseleko/jdPwibV/bang_bang_bang_just_dance_2020.pdfIn PDF document text
    • http://prod-fruit.space/dirt_bike_riding_around_mev7dio.pdfIn PDF document text
    • http://remont-kholodilnikov.website/mathematics_maths_dictionary_a_to_z_with_meanings3gbwi.pdfIn PDF document text
    • http://copyright-help-report.com/xurobepimakijomutumapuknhp9h.pdfIn PDF document text
    • http://dkshlyap.ru/zokevavunijufafenidirazab7jvhi.pdfIn PDF document text
    • https://cdn.sqhk.co/vagekoxes/LiG2jdQ/tanivesatapiwalizewam.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/tedowafomaru/new_vue_components_template.pdfIn PDF document text
    • http://kufekisawisewo.onlinewebshop.net/interior_decorating_software_for_mac.pdfIn PDF document text
    • http://gosaduzunake.myartsonline.com/how_to_find_the_fgx.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_off0000dfd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD4 5508 bytes
SHA-256: 12b05859ceaf123b85f32c509ffd71c8558b042cf56419b10f9d8f7b56b26345
font_01_sfnt_off0000f273.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF273 10312 bytes
SHA-256: 52ed656b10f4fe1380a357050c0e46b3f38b5d33abbd79e509eea2115b33182a