Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d7b3708a6474f3c…

MALICIOUS

PDF

70.5 KB Created: 2020-11-28 04:13:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 65206ffd325779031a612713918b7f5b SHA-1: dbf15f227a57c1d991a41072324152681e02bdab SHA-256: 6d7b3708a6474f3cafa55e2033b8d330c661041f10b5904dc6e3fdb7da8f4ceb
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://traffmen.ru/aws?utm_term=madcon+beggin+flac In PDF document text
    • https://cdn-cms.f-static.net/uploads/4402252/normal_5f9243adeb69c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381083/normal_5f8e4f17a6776.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407084/normal_5fa8e55bb9714.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388157/normal_5fa0c65ca686c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406497/normal_5f92cc313b565.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427313/normal_5f9f80d6a70a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375203/normal_5f8c197eec355.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392649/normal_5fa5983760491.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450259/normal_5fc17897791f2.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://uploads.strikinglycdn.com/files/8ddbac45-a555-48cc-be18-6aadb8b0c2b2/xexasomojosamarodokej.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/marco_polo_discovered.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7dec07a-2fb3-4620-960c-ccd2bfc7bd2c/40780714476.pdfIn PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/77148409023.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20870f27-1d34-4a88-bca4-06cd649e0320/18838584411.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_off0000c16f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC16F 4768 bytes
SHA-256: 266c96b85b5c1f851c4b705d13a5e5dde0df540eeeb8ba949f2f9450470c1732
font_01_sfnt_off0000d1af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1AF 14740 bytes
SHA-256: ecc0f5365d78f46a6435db82f1224dac4286a538c43c6c76b48f91569f6988c4
font_02_sfnt_off0000ff3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF3D 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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