Malicious PDF — malware analysis report

Static analysis result for SHA-256 e80a639a44bd4d83…

MALICIOUS

PDF

72.6 KB Created: 2020-11-09 22:42:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: f668b3cabacaff56865e45611e94d773 SHA-1: 76f853b391e5633ac089eafc0560d33de70f31f5 SHA-256: e80a639a44bd4d83662281974817c66486cd891a8a553157aa75f884faacc9ce
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL leading to a suspicious domain. Heuristics indicate it's a phishing attempt, and ClamAV detection confirms it as a malicious PDF. The document body, though heavily obfuscated, appears to be a lure related to game cheat codes, directing users to the external URL.

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
  • 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://trafftec.ru/aws?keyword=cheat+codes+for+force+unleashed+2+xbox+360 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454164/normal_5fa94dfb6b4a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422378/normal_5f9f1f2a4eb70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447915/normal_5fa7712c4cb5d.pdfIn 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://s3.amazonaws.com/latufenaw/mid_maryland_football.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/autism_dsm_5_criteria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac87aa91-b4d8-4789-884a-d1aee399a1bf/a_hook_sentence.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78f421ac-86c8-419e-8683-39654ddbee77/8916961478.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6a60f18-4477-4142-881e-1f3c1c55e7c9/papipapojavasewunoberuz.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/83295435432.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/ffxiv_pocket_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabisura/wekepigasoputixavebali.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2d92eb7-135a-493e-a527-4c63befbe725/27945994712.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/88086383843.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f74d7fc6-c46d-4f16-a45b-0d9d71818c55/lampadati_felon_gt_gta_5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9adff739-60e6-4220-8e10-b44645b0df5e/xakunipunazeroduru.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_off0000d10c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD10C 5768 bytes
SHA-256: 0b1e37f009a659125802e5105037fabf33826b71738ccb6ba7a1058364c0d40d
font_01_sfnt_off0000e49f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE49F 10112 bytes
SHA-256: 434668a3013bfb34964d11d8dea3510be0f5879a3b474769e3314ad69d5811ea
font_02_sfnt_off0001071f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1071F 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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