Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2a542bc5c421238…

MALICIOUS

PDF

89.1 KB Created: 2021-02-21 02:03:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2da5c23b8fdc5f9b64573c2f8d00a35c SHA-1: e39aa7bba8b8f897211e30ccef8a6e9197555b50 SHA-256: e2a542bc5c4212388691d80ae14afb44f9e2b0303f7a5ffe4c9fec705c8ab088
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. The PDF structure and embedded content suggest an attempt to disguise malicious intent as legitimate information, aligning with spearphishing tactics.

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://jacksth.ru/strik?utm_term=the+raven+remastered+xbox+one+achievements
    • http://zakofuta.66ghz.com/picsart_background_hd_images_1080p.pdf
    • http://prequester.online/advanced_english_cambridge_bookygzpo.pdf
    • http://sallehq.xyz/raxefaxapevol4ohh.pdf
    • http://jekebes.iblogger.org/mastering_autodesk_revit_architecture_2011.pdf
    • http://baderakavakuf.22web.org/zowago.pdf
    • http://riforemepenog.iblogger.org/hogwarts_acceptance_letter_template_online.pdf
    • https://kuginipa.weebly.com/uploads/1/3/4/8/134853520/dukeg_sikofak.pdf
    • https://putofikanavo.weebly.com/uploads/1/3/0/7/130738484/lawodikusotibedo.pdf
    • https://cdn.sqhk.co/ruwonumatag/VngfXhe/47919646398.pdf
    • https://bixedonaxube.weebly.com/uploads/1/3/4/6/134619794/8249148.pdf
    • http://dostafood.xyz/diablo_2_hammerdinij062.pdf
    • http://ebay-coupon.ru/kadokawa_dwango_corporation_annual_reportm342s.pdf
    • http://tozepefaj.iblogger.org/98135353347.pdf
    • http://sexasuwodig.iblogger.org/xikatomewu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000120e0.bin
e00eb8206d4a70ee8fa39157442df91e4364fd125d70c97b911dda5720ad4e8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x120E0 5364 bytes
font_01_sfnt_off000132f6.bin
880a8e3d009372497e732768b00ff501dc14b3d60b61e3e686498dec79087a36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x132F6 10572 bytes

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