Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e44525eff9ddf60…

MALICIOUS

PDF

92.4 KB Created: 2021-01-09 18:39:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 8adf91e0ea7767a33396e94d7ed7c9cf SHA-1: c96339e0eda102e6eb6321888decf035829cd1f1 SHA-256: 9e44525eff9ddf6014f431f2dd39fd2af79dbca75f17041d645fd2c096b03f65
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 'ggtraff.ru'. ML classification and ClamAV also strongly indicate maliciousness. While no scripts were extracted, the embedded URL is the primary indicator of compromise and suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://ggtraff.ru/aws?utm_term=ink+master+angels+episode+guide In PDF document text
    • https://cdn.sqhk.co/duwutawuna/cMaia2c/tactical_war_tower_defense_game_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/faxenukev/ShPvmCW/best_soul_armor_minecraft_dungeons.pdfIn PDF document text
    • https://cdn.sqhk.co/kurotevu/dp6ijdn/hard_time_prison_sim_vip_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/tavikagisato/ggig9hd/dash_dungeon_tomb_runner_dungeon_quest.pdfIn PDF document text
    • https://cdn.sqhk.co/gafokoru/eGjcuid/tefosofipexudituxepumipeg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473322/normal_5fd1adb18a734.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379855/normal_5ff59cd81147b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b3cbf93-b83f-4e4c-8948-30ee499e9f41/1368132889.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63814dbc-a1eb-452d-bece-a81c98baf47a/summoners_war_promo_code_2020_ios_link.pdfIn PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/48823322024.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85cc3285-cc0e-466a-bbcc-17670e5624ba/21059523794.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35416cf6-cfb6-4033-b883-cc162644af5f/67058741483.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ca342bd-78b5-4061-9790-89b2b19b4b8c/50052121193.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70e9ea79-c222-4896-ac3b-d44cb5eb96a0/magumevepujotoxetizel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/052c1a69-56af-4fa8-9a27-ac086df69cc5/91767749175.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b850399c-db15-436b-b7d7-3495752eae37/26235304346.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c6a906e-105e-43a6-86e0-06bd26a1fa3f/armstrong_high_school_football.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_off0001289b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1289B 5280 bytes
SHA-256: 415c0cb2a476cd736a9366d683b1e2e55268c9f9383060dd6cb26afe4c4e559e
font_01_sfnt_off00013a76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A76 13356 bytes
SHA-256: 90376b538729cbbce9afc97a037cc154843d937539d164f5d59ab051c7df2ce3

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