Malicious PDF — malware analysis report

Static analysis result for SHA-256 7224d54ad1905cb2…

MALICIOUS

PDF

72.6 KB Created: 2021-07-12 21:09:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f4c55f39ef856989bd6a838c0afbdf85 SHA-1: f93ebe53338ea35782d0c247f4a7d13f7c1de270 SHA-256: 7224d54ad1905cb21a7715e19ed9ac3f7b9e65631f2f0461bd7506352ada3130
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious by a machine learning classifier and ClamAV. It contains an embedded URL that likely leads to a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious resource, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8363

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://feedproxy.google.com/~r/sq/ugae/~3/X6hrLWyzjlw/square?utm_term=how+to+hit+driver+300+yards
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec83257a1add4dee1f7ac0/1626112806174/nokagenifa.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec7e5dfd54eb0708255007/1626111581634/32309789689.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8f2b3e370ac632286fb3f/1625879220070/slope_game_unblocked_games.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e77eae32181127191560b8/1625783982982/24114385971.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e92639854c1d3b3487241c/1625892409474/wobodurasepi.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e7b6a423621b4743e227b2/1625798308343/letter_to_the_press.pdf
    • 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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000baeb.bin
d5e5e22ffc07d3445bf1df7d618c348b07fe2d467ecfe2fa5a4e0f44c1ecdba9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBAEB 10744 bytes
font_01_sfnt_off0000d3da.bin
8fd5aca832151da6328ff787966f7694282aa191555a2b8c4a0bcb54f6b5f9ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD3DA 16376 bytes
font_02_sfnt_off0000fe46.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE46 16792 bytes

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