Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3d9e9c872dc76d0…

MALICIOUS

PDF

68.0 KB Created: 2020-12-17 16:39:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3aecef43e746a98d4ff048eda53ac881 SHA-1: 220515c1ad50cdba07cacf07557db6004a69e73a SHA-256: e3d9e9c872dc76d03865de3c1f0902a14d89ff0e10500a46b91b416e3081bb8e
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffmen.ru/123?utm_term=forego+or+forgo'. ML classification also strongly indicates maliciousness. While no scripts were extracted, the presence of a malicious URL within the document body suggests an attempt to lure the user to a compromised site, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffmen.ru/123?utm_term=forego+or+forgo
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/981c38f2-8731-43c6-9724-539367d5c410/84701462691.pdf
    • https://uploads.strikinglycdn.com/files/42fcaa63-4a0d-46ca-bf37-123002077a26/let_us_c_solutions_yashwant_kanetkar_free_download.pdf
    • https://static1.squarespace.com/static/5fc708a58d6e8c3767c103d1/t/5fd17736f2ee360040eeff9c/1607563062103/flight_simulator_2020_controls.pdf
    • https://s3.amazonaws.com/xiwevitox/specialist_betting_tips_vip_free.pdf
    • https://uploads.strikinglycdn.com/files/16ff49bd-8c93-479a-9a18-cff07811bcd7/xuvugisunigukekaxu.pdf
    • https://uploads.strikinglycdn.com/files/36c531c1-fa43-479d-9c8f-7dcdc51be5b5/volitebulakiverunafenopa.pdf
    • https://static1.squarespace.com/static/5fc6fcd4d8c3650128350c97/t/5fcbdd131ef6d1662ffb31c9/1607195925229/eagles_greatest_hits_song_list.pdf
    • https://uploads.strikinglycdn.com/files/1d1122f3-e3d4-4d08-a189-d10b174bf9fd/teoria_general_del_proceso_jose_ovalle_favela_descargar.pdf
    • https://static1.squarespace.com/static/5fc0cf44e5c7695ca99b2c1d/t/5fc136d13570fb44d12ee7b0/1606498002037/24675397376.pdf
    • https://uploads.strikinglycdn.com/files/73e33883-f86c-4861-8b11-06cca2ee628b/fundamentals_of_electric_circuits_6th_edition_solutions_slader.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_off0000c561.bin
6c3dfc875d8bf6f3915397dd7cec49b53208285c8502cc6845e4df5269d92a5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC561 4024 bytes
font_01_sfnt_off0000d30e.bin
46eb4d3e65f2b6ce5eb2d1b06034926d1a112bbf55983e14253a39c4ad108b1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD30E 10232 bytes
font_02_sfnt_off0000f5e7.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5E7 4324 bytes

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