Malicious PDF — malware analysis report

Static analysis result for SHA-256 325872628ab54eac…

MALICIOUS

PDF

61.4 KB Created: 2020-12-20 19:41:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: c22c5162c303dbb3642ad65cd1931e4a SHA-1: 2929d968b487136b700453b9f0dcef9ec99c2fb1 SHA-256: 325872628ab54eacec90db18c53cfd0d01dc68463501e579a6b248df5f3ef060
104 Risk Score

Malware Insights

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

This PDF file was detected as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The document body, though partially corrupted, suggests a lure related to an 'owner's manual' for a 'Glc 43 amg'. The presence of an external URI pointing to 'traffset.ru' strongly suggests the document is designed to redirect the user to a malicious site, likely for downloading a secondary payload. The heuristic 'SE_DOWNLOAD_BUTTON' further supports the phishing or social engineering aspect of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffset.ru/strik?utm_term=glc+43+amg+owners+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421476/normal_5fc16b1042920.pdfIn PDF document text
    • https://mixodozom.weebly.com/uploads/1/3/4/3/134333910/gepixit.pdfIn PDF document text
    • https://watoniworawi.weebly.com/uploads/1/3/4/8/134871767/bc6a5de9c0d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388608/normal_5f9b7d4ec0190.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/a12c3b06-9ea8-4603-ad5e-9f713b471a17/tuwala.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/smart_goals_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/lefomumutade.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/dubokuduranal.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2aa710a2757459bee4ee8/t/5fc69f7b173fb5383b8d0745/1606852476671/prestige_sandwich_maker_with_removable_plates.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/337f6fc2-391c-48f7-b3ce-cab461e2e799/what_is_a_predicate_nominative_pronoun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c37f58a1-6155-45a0-9aa5-f6d71008f192/koranesigesarabukebabago.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/412025b1-4bdc-441a-98bc-0f972dc8cf14/soccer_heads_full_screen.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/maworapatibu.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_off0000b547.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB547 5496 bytes
SHA-256: 271b1681499d248b6fcf8d06d90793b8a6b09ec6197cc98f42e6733d882ba318
font_01_sfnt_off0000c801.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC801 9676 bytes
SHA-256: 43d62f21163cd3efdd4da0cbd84ae6b8de4aa35c83ec326d25b88f6fa6b528b2

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