Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c9a33d7e552689a…

MALICIOUS

PDF

88.7 KB Created: 2021-04-18 10:12:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08f32a8a02aa796e3d346fd141509330 SHA-1: bf7743277cdead86ed3f14b1fed2096344df9a62 SHA-256: 7c9a33d7e552689a59d5244ad4f4c14475679dd01b63b105b5d7579c333ea3e4
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pelibifir.ru/strik?utm_term=vegetarian+indian+cookbook+madhur+jaffrey
    • http://wunuxuvi.sportsontheweb.net/83323123258.pdf
    • http://xepidenad.scienceontheweb.net/vefepezekafo.pdf
    • http://fegokodelaxen.scienceontheweb.net/counseling_services_processes_and_methods.pdf
    • http://montana-media.com/pagiwexirlv.pdf
    • http://center-san.ru/18331268720chth8.pdf
    • http://khanapoorti.com/bekaborepalebv6ac.pdf
    • http://damita.fun/used_viking_spa_for_salegyk4v.pdf
    • http://verifybadgesbusiness.com/why_does_my_canon_camera_screen_go_black7hvc3.pdf
    • http://wunadimizurened.medianewsonline.com/10158087474.pdf
    • http://vejuwetuk.mypressonline.com/7225920020.pdf
    • http://kelimap.mywebcommunity.org/vuzenipugowalujupur.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/lekezaru/44298332069.pdf
    • https://s3.amazonaws.com/tobito/skype_filehippo_full_setup.pdf
    • https://s3.amazonaws.com/lolijexejomak/djamila_ribeiro.pdf
    • http://fanalejowegop.atwebpages.com/74965547149.pdf
    • https://s3.amazonaws.com/defipedibe/48053731622.pdf
    • https://s3.amazonaws.com/kigavanus/juropesimefis.pdf
    • https://s3.amazonaws.com/veraxawewib/17903602399.pdf
    • https://s3.amazonaws.com/fakuguvil/facts_and_opinions_worksheet_grade_8.pdf
    • https://s3.amazonaws.com/xapidajovaji/81059979717.pdf
    • https://s3.amazonaws.com/gopifu/batokiwevutire.pdf
    • https://s3.amazonaws.com/zarelusipofox/3040047994.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010e22.bin
47f33fbb4896151092c40512023158ccf7c0330574ef4c5fabeb1123f172bfd8
pdf-font-stream PDF embedded font (sfnt) at offset 0x10E22 5452 bytes
font_01_sfnt_off0001208a.bin
cb514621c0e6b2fa33b18ac9770d7df345b3ed1bd4be10cefb49caf8e36629ac
pdf-font-stream PDF embedded font (sfnt) at offset 0x1208A 11156 bytes
font_02_sfnt_off00014682.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x14682 4324 bytes