Malicious PDF — malware analysis report

Static analysis result for SHA-256 b29964739855dcfd…

MALICIOUS

PDF

89.3 KB Created: 2020-12-29 22:05:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: c7b534a27a098847f311f486cb4fd545 SHA-1: c13c749c5661f95039a18554e4c77d1c5cac1d0d SHA-256: b29964739855dcfd0a093e06d7efcdd0b6daee67ad5ec67d290ddbe03f576140
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL that leads to a suspicious domain, likely part of a phishing or scam campaign. The document body, though heavily obfuscated, suggests a lure related to a subscription.

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
  • 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://traffking.ru/strik?utm_term=science+vie+junior+abonnement PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4390385/normal_5f91ac17d7ab7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370278/normal_5f888b84d9322.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366305/normal_5fc2038ad9259.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381973/normal_5f8ef75cab059.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369150/normal_5fa8676644004.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446273/normal_5fe3476e8dd50.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393181/normal_5fcd3a00dcd05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365620/normal_5fb7bdf5b952d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416664/normal_5f968ffc80032.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388412/normal_5fc5e5e43c358.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/juwofuxufijup/aspen_heights_clemson_tv_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa0eecd6-0a4a-4f82-af1c-26c4ffd7b709/votisefazurot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a253b30-d467-4f61-9011-cfb8f8a32313/framed_fat_bike.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92766b26-b781-493c-8d8c-5ad768c278b3/c_gate_ohio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3859b40-879e-430e-9c86-b1430373d00a/free_movies_2019_app_download_for_microsoft.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/arithmetic_and_logical_shift_difference.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41d63807-abc5-401f-af52-aa03d6115160/banefovili.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_off00011feb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FEB 5112 bytes
SHA-256: 210391b801ef315f2eb176614a9d1bd28eed150daedbed681134c555bb742d8f
font_01_sfnt_off0001314c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1314C 11352 bytes
SHA-256: 18b07b0976aa060e17cd558e4a17b7e8bf4c7a41afd8eb2a5cf7fe679f465215

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