Malicious PDF — malware analysis report

Static analysis result for SHA-256 008452d65ad3d0f2…

MALICIOUS

PDF

84.4 KB Created: 2020-12-10 06:22:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: d1086164d17614a11ebc172c29a92de2 SHA-1: d628d6bd47522ceec4f53b221de5c4fb212703da SHA-256: 008452d65ad3d0f2365eab1a29218df2d16bb9fb37899ce3d68ed62a8376456d
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, traffmen.ru, disguised as 'free flute sheet music'. This indicates a phishing or scam attempt. The ML classifier and ClamAV detection strongly support its malicious nature. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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=easy+flute+sheet+music+free In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369501/normal_5f98fdd3a7428.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371266/normal_5fab89932ce0e.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/59224d08-4c9a-4b00-8d52-37b39c5c3569/28409017760.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbffcc36609fd0ee78c2f31/t/5fc1143f3485235c86ecf4c2/1606489158586/30771740323.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56782472-c535-4eb9-b003-6032fd0f165d/empires_and_puzzles_free_gems_ios.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/994cae8e-a35d-4530-a1e1-1e0001f6ce12/nifejorivamif.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2856f24b06a7eb3098ecb/t/5fc49587fa04221c71b1f0b4/1606718856325/zomevawezakoraj.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbffa571c8c7413142c9acf/t/5fceed5b01eaf4591e1cb276/1607396699653/castle_wars_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f38f7afe-adc2-4fe4-b8e2-62bd8353f065/zaletogutozegipel.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfcfeef3361272aec3bb5/1606221055160/weber_spirit_200_manual.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e99c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE99C 4848 bytes
SHA-256: be892cec552b298ea99cbbc1529f0c6e510ba09869c9459d67c85d4cc6962400
font_01_sfnt_off0000fa18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA18 11764 bytes
SHA-256: 6a0f7c8a74a9482c104eecf0efa917f39d40df6516fd2c6cec8e5b1ad9bd1b25
font_02_sfnt_off00012167.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12167 16100 bytes
SHA-256: d973db94ba2c448c661c26f08d051ac794e7cb4f3c7daa33c2141e8036f071b6
font_03_sfnt_off00013635.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13635 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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