Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f4c71e640db4767…

MALICIOUS

PDF

72.2 KB Created: 2021-03-02 07:47:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2778460f907f3ff62b5166ec3292c3fe SHA-1: e776f9414f755c3b8819802bae9c3efcd6596ac1 SHA-256: 6f4c71e640db47672750efba740678328075324678841bb92f41784a7e6520c7
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://resalured.ru/wix?keyword=mini+cooper+haynes+manual PDF link annotation
    • http://top-agent.ru/anteproyecto_reforma_codigo_civil_y_comercial8b3w9.pdfIn PDF document text
    • http://avtovishki-msk.ru/ledupudikavakudadawotlnpr.pdfIn PDF document text
    • http://amandeepsadyora.com/gigebipizufulemafcs5b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371258/normal_60253b536dbaf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481162/normal_5fdf9507a1616.pdfIn PDF document text
    • http://7lessons.site/575519028912alqk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489596/normal_5fdc7b4f39bd4.pdfIn PDF document text
    • http://instasurprise.online/sasikisinifikzthw.pdfIn PDF document text
    • http://runmasten.online/banjaran_movie_ke_video_songnawwu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468551/normal_5ff54be00368f.pdfIn PDF document text
    • http://reduslim-ordina.site/45680601018hghxs.pdfIn PDF document text
    • http://fuckfrsky.com/reading_comprehension_activities_a29lmco.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rawurokavuxari.rf.gd/do_chick_fil_a_hire_at_15.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/certificate_border_cdr_format.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/christmas_carol_songs_mp4.pdfIn PDF document text
    • http://babokad.epizy.com/39094015146.pdfIn PDF document text
    • http://fifusudevop.rf.gd/bike_race_free_mod_android_1.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_off0000de22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE22 5280 bytes
SHA-256: a2049cce0ca414d54069a1a732a791f3018e793bb96c83fa817473da317acb50
font_01_sfnt_off0000efff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFFF 10476 bytes
SHA-256: 08b75dfff787c69635966cd9b4820ff5d533a78d15a167bd121537f10ae3f373