Malicious PDF — malware analysis report

Static analysis result for SHA-256 6efd51ef04f5cc5d…

MALICIOUS

PDF

73.2 KB Created: 2021-03-02 05:23:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 45f3edf3f9fc79ecd3c7b61637cbac4e SHA-1: c5fedeb47528f4c36c38a2ce47cd6a7f5fe375e8 SHA-256: 6efd51ef04f5cc5d9bb59a4e9555f8a73c362ebd015eb06d4e22f16d4d1d9944
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://fokemale.ru/wix?keyword=suntec+a2va-7116+diagram PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4376875/normal_5fe94ea409e89.pdfIn PDF document text
    • http://hdvideo.design/visegajimiwoirnmu.pdfIn PDF document text
    • http://naziniza.22web.org/casio_graph_90_e_calcul_formel.pdfIn PDF document text
    • http://biotringel.shop/581019199269wmg4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473415/normal_5fcdba767070d.pdfIn PDF document text
    • https://cdn.sqhk.co/fuzomorikat/dgilief/73449258818.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417670/normal_5fef1734ce08e.pdfIn PDF document text
    • http://poxijirubulemax.22web.org/bethune_college_admission_form_2019_merit_list.pdfIn PDF document text
    • http://liketime.fun/oil_heaters_making_noisesa2vjz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428078/normal_5ff128f539d8a.pdfIn PDF document text
    • http://khareedforosh.com/bajabojurubavinugusjqpta.pdfIn PDF document text
    • http://levantemosaic.com/965607856684yn9b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375086/normal_5fcc2e8072a96.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://robavumu.rf.gd/2545492430.pdfIn PDF document text
    • http://sirirowevaga.rf.gd/97891389012.pdfIn PDF document text
    • http://sasavinoseg.epizy.com/lotos_plasma_cutter_ltp5000_review.pdfIn PDF document text
    • http://rikexulekoj.epizy.com/61658719906.pdfIn PDF document text
    • http://gizamir.epizy.com/aplikasi_adobe_photoshop_sketch.pdfIn PDF document text
    • http://retomog.epizy.com/holt_mcdougal_american_history.pdfIn PDF document text
    • http://fasekefap.epizy.com/pewodozavilaxovopeka.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_off0000d5fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5FB 5664 bytes
SHA-256: 28fa2cb2112aeacedb6da9c1e282796bf94c2ffaa32eb4fb8b66aebf3a70e3f1
font_01_sfnt_off0000e950.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE950 14872 bytes
SHA-256: b8464d6f6170e5317efd85287f5a67c77acc7eeb6837923f703b3f357f5bb6cb