Malicious PDF — malware analysis report

Static analysis result for SHA-256 6de72ce59766c974…

MALICIOUS

PDF

80.7 KB Created: 2021-05-09 02:21:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d8f3e6cf66e6857accd548842667a0f1 SHA-1: d897369d861ebd6e132c2348c6b4e71e8093c2e9 SHA-256: 6de72ce59766c97452982c8ebfe564b8c63ad21746b3f8beaf6799e845e5c11f
96 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by multiple heuristics and a machine learning classifier. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. The ClamAV detection further confirms its malicious nature, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/strik?utm_term=functional+independence+measure+scoring+guidelines
    • http://matrixbicycles.com/28395626426hwrpa.pdf
    • https://cdn.sqhk.co/putepirapad/hfihuot/warhammer_fantasy_battles_6th_edition.pdf
    • http://pekibexuvipeve.scienceontheweb.net/52815452043.pdf
    • http://zixudivibudizu.scienceontheweb.net/77649047786.pdf
    • http://anyita.space/cheap_browning_hi_power_clonesut0po.pdf
    • https://cdn.sqhk.co/tawibonikigo/LpUjfYe/zapidukifi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/ce789567-0732-4181-bea5-38b2f4a5acb6/71944888016.pdf
    • https://uploads.strikinglycdn.com/files/08a83d43-3fa7-4759-bc94-0af787725ddf/79507195404.pdf
    • https://uploads.strikinglycdn.com/files/5c8082d0-8e3b-45ab-bf32-2f042eb7d185/roku_2_set_up_instructions.pdf
    • http://bavatesivo.myartsonline.com/s2_netbox_user_guide.pdf
    • http://pitigapevede.onlinewebshop.net/ielts_writing_answer_sheet_download.pdf
    • http://xedemigu.atwebpages.com/90888069125.pdf
    • https://uploads.strikinglycdn.com/files/a8fdbf08-996b-4323-8df2-5f529edb0dc1/what_are_some_side_effects_of_pain_relievers.pdf
    • https://uploads.strikinglycdn.com/files/8f57e148-ce33-47ba-b762-41283bdd8a58/94598983515.pdf
    • https://uploads.strikinglycdn.com/files/d008b4d9-2488-4e23-b8dd-508d6c2cfaa9/big_fish_grill_market.pdf
    • http://vivetusukuv.onlinewebshop.net/ibps_clerk_english_book_download.pdf
    • https://uploads.strikinglycdn.com/files/3ddf4e3b-0e49-4e39-9986-c57d0c31942f/zusurivaxegatiga.pdf
    • https://uploads.strikinglycdn.com/files/408a193b-7b56-4eb6-9b3e-85a9824547a0/likigiril.pdf
    • http://bebovufuvuji.myartsonline.com/jayces_navy_interstellar.pdf
    • https://uploads.strikinglycdn.com/files/e7dda074-231e-49c1-b7b0-9ae3cc39644f/70419424790.pdf
    • http://kivozusemu.atwebpages.com/7912728929.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010029.bin
174d0d3872e10a09949293d0f16be23521ab6442aa3a5ebf990aa85d1cacf575		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10029 5348 bytes
font_01_sfnt_off00011245.bin
2b82b901b0ea4a50b3ae979259262c5f08e3f17ad7d708704517f1f0164e9104		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11245 10216 bytes

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