Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3c56f2652da07b8…

MALICIOUS

PDF

61.0 KB Created: 2020-12-15 00:11:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: ffffecdb65de665a8cfe3a1e5802585f SHA-1: 76221754a777cd7820d4d7237cacb3b49a73fa5e SHA-256: b3c56f2652da07b84fb734db04436955db1f1db7651b0d6cc97e79c75a05003d
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'traffnew.ru', which is likely used for phishing or to download a secondary payload. The document body, though heavily obfuscated, contains text that appears to be a title, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffnew.ru/123?utm_term=ab+dekh+khuda+kia+karta+hai+episode+15 PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/volitokuvufoxujomepesileg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9068a108-cdbe-4a4c-8a2b-01ea1a47debf/mr_coffee_optimal_brew_12_cup.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/vsco_x_full_pack_latest_version.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8145da8-aacb-446c-bcbd-94f05f9e960d/49239033431.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b87bb2a-c63e-45e5-9d89-ffb2ff0bd990/40112086743.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/friendship_status_videos_in_tamil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43f7dd01-91cd-4520-8404-aaa931e3fbbb/amor_eterno_telenovela_turca_capitulo_26.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2aebbb8467722f1dfa14b/t/5fcb74f3551bdc47e7a89681/1607169273764/offline_battle_arena_games_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/zetituri/23673171033.pdfIn PDF document text
    • https://s3.amazonaws.com/bipovoromoj/62216594215.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8eb095c-1500-43d4-a706-8eaef2e52073/60049278659.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5905eea2-6fd2-45f7-9410-66e4381f942e/78765314343.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_off0000b21a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB21A 5384 bytes
SHA-256: a077f8c592066c4ce75e9095577667a6cc8b0f2eb952986afd0c3be659ecc036
font_01_sfnt_off0000c461.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC461 10280 bytes
SHA-256: e5b19740c138e13ed92c95c5bc3516959aa9ff6795a1d8537fa8256df40e0590