Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3da8d9ef2a9e04b…

MALICIOUS

PDF

64.6 KB Created: 2020-11-14 19:35:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: be0346dbfd372ba7470df460b4dea082 SHA-1: d88adbba27a1d0a0f9bc524b26d8dc8528a0c884 SHA-256: d3da8d9ef2a9e04b43b93da6f81328a5b42cd9d284de7c170de550a7093a3515
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://cctraff.ru/123?utm_term=mine+till+midnight+pdf+free+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366343/normal_5faf36b5175d7.pdfIn PDF document text
    • https://muborite.weebly.com/uploads/1/3/4/4/134442605/274038.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383573/normal_5fa58328445b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389365/normal_5f8f03a77917e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387218/normal_5f8cfe57712ff.pdfIn PDF document text
    • https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/015cc0b7146b0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388611/normal_5f8ee1571d87f.pdfIn PDF document text
    • https://lixaworone.weebly.com/uploads/1/3/1/8/131871871/d2f1016926b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369330/normal_5f9f7dd46a46a.pdfIn PDF document text
    • https://zekilunadaxidub.weebly.com/uploads/1/3/4/6/134631079/2968019.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/36d2e6da-07c3-4df6-b298-590dfadeda1e/94240638448.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94db6781-e4b9-45b4-bb57-41ef67c38bcd/xugixatozeki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72e62a99-7f37-440e-9091-8b4d2b656c8f/9735783092.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_off0000b39d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB39D 5164 bytes
SHA-256: c8be9f8e1972dd36191f28a416dd15eb79977eac423948f52ff0780380810639
font_01_sfnt_off0000c50a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC50A 10192 bytes
SHA-256: ed9e1b887141185920cd7e2bb051a7ac23004af33a9926a0af02ef3345e652e5
font_02_sfnt_off0000e77f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE77F 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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