Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d332fc24ca421f7…

MALICIOUS

PDF

76.4 KB Created: 2021-02-19 09:52:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 30957724572d2a6582461747433132c6 SHA-1: cbd34276c88fffcb5898c79ceba69fe03a077984 SHA-256: 8d332fc24ca421f7cd15c65e0fe27addbfa0eaf255da9a3b8992fad6d27612dc
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 0.9998

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://seumenha.ru/strik?utm_term=family+feud+game+board PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4491969/normal_5ff08933d4ef9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476445/normal_5febef7787560.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476133/normal_5ff3f48c6d971.pdfIn PDF document text
    • https://cdn.sqhk.co/fovulifavu/idO1Nii/coral_snake_color_poisonous.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372721/normal_600745b7b51f6.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwipabobatu/hjTbjiQ/74237560628.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478415/normal_60278d29ef7f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379971/normal_6023f3bc6e66f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382190/normal_600611449a775.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374522/normal_601d59c34f6ac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496586/normal_5fe13df3a5ea2.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/petikamov/xumewaxezutumeviwovun.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/portable_mp4_to_avi_converter_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/93274546870.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/aptitude_form_meaning_in_marathi.pdfIn PDF document text
    • https://s3.amazonaws.com/jezobasit/kilaguterusus.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/liszt_hungarian_rhapsody_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/mowovewunivilofi.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_off0000ef51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF51 5244 bytes
SHA-256: 98bf8071fe9872d72e24bec2a696f33b21bcaf11d02623094a2f77afdb3448e5
font_01_sfnt_off00010123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10123 10268 bytes
SHA-256: f39036975bd36ea54ba0c17e2d7ffc8910953e4f262ec27aec5fe90b5be66c4c

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