Malicious PDF — malware analysis report

Static analysis result for SHA-256 76fe60c262f596b7…

MALICIOUS

PDF

73.8 KB Created: 2020-12-11 21:29:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 753597371ca6529e909dbbd82b291e36 SHA-1: 8244293ac4423424170a1347b9405a7ab10a1e35 SHA-256: 76fe60c262f596b7896eeda1a3191c1e62473851048958bf6d996f298a611957
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 'traffine.ru', which is associated with phishing. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL strongly suggests an attempt to redirect the user to a phishing site, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://traffine.ru/wb?keyword=secure%20email%20app%20android In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/b7095a66-a621-4b2b-a25d-04fb0cb19ef0/fuwetizodixosit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/402a3719-b8a8-464a-bc85-30dcf49b42f7/pomifadivolebo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2c6472e34347c705053bb/t/5fc8a5b5094cf7617dc5ae9f/1606985147864/pokemon_yellow_gameboy_rom.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f5b0c6d9645836227daa/t/5fca6cab28c35756c198365a/1607101614830/daripuzikevilakasur.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce46a9dded0f7041acea85/t/5fcfca375dba994a4884302c/1607453241310/wuraxukolomewen.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2a825a13a450babff6b59/t/5fc961b9e31f6d5f09460eec/1607033273407/burn_your_fat_with_me_fg_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6abf1752-30e3-4a9e-aef9-b7c858285182/jimatudarizof.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc557cb3398ff75154b585a/t/5fcef838cd9a2056ff6b77f0/1607399481283/glymphatic_system_blood-_brain_barrier.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6cffba4d75e5252f0b0fb/t/5fc8ead8d7c71023d2431610/1607002840933/telepsychiatry_companies_in_california.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ef9c05c-016d-48f9-9bf8-cdc3c67626ad/20353696024.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/766af8b0-bd7c-494e-8bb7-8e535043c01f/rechargeable_pool_vacuum_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60473592-2dda-486a-b3aa-d07797af27a0/dorunun_analitik_incelenmesi_zml_soru.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc052d83dfdd95b60d21819/t/5fc17707eaf37e3b64d3af45/1606514441841/suzannes_diary_for_nicholas_movie_netflix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c97e1160-0bbf-44c4-8bef-5c908ffe8d98/veforosuveg.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcde7fcc190381d6d6305f4/t/5fcf0dd657846c5b834da827/1607405015158/jurassic_world_the_game_apkpure.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d77c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD77C 4944 bytes
SHA-256: 9cb3afd25b2c3ba45ca0c9347b39fda626e15a7e1277c43044ce62f6e96f091f
font_01_sfnt_off0000e818.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE818 10488 bytes
SHA-256: dda1e8ce974db6da0553c6b706a14390a0c937054d8584ebfb2b7d2d3498d20b
font_02_sfnt_off00010bfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BFB 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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