Malicious PDF — malware analysis report

Static analysis result for SHA-256 849eae89431fb08b…

MALICIOUS

PDF

112.2 KB Created: 2020-11-25 05:50:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8217f8f1ab71e59ea5a11ea3119cbf5c SHA-1: 258c2ba126d061755923115714f087b3f3c6aaba SHA-256: 849eae89431fb08befaa1de7cff3d79fb2c1c83ddaf486949b7c26ae40c249c8
96 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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafficel.ru/strik?utm_term=hidekaz+himaruya+missing PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4457296/normal_5fabbf991c79f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367283/normal_5f963d5ce64be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446259/normal_5fa891c8a6cae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466675/normal_5fa7819a6a643.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402737/normal_5f9b5fb1baae8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376087/normal_5f8dcc5caefc0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413345/normal_5f9f6a4c5e021.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/8cf123fd-ce0c-4850-bf94-a24d54ae6138/acadian_middle_school_lafayette_la.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13a58382-1414-4657-a11e-f62029430259/43257634290.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50af6515-de60-4a86-841a-2e1dd5a887aa/28172698387.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1785db5-f13c-4404-9d17-3a9b0011f5ca/zidexupebipavegagik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc150a8d-5b6d-42be-b176-4a7037b62c32/catalizador_de_un_carro_in_english.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_off00016e11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16E11 5076 bytes
SHA-256: 569598ddbe217442b238669cfb89bd12034aa8af774f4796ddc541f391dcdfde
font_01_sfnt_off00017f1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17F1B 11624 bytes
SHA-256: ed0be2bc1a4e2d2ed29ffe5a752a1eb739dbf3b8259d83a0b0de277922b6cb90
font_02_sfnt_off0001a5ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A5AE 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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