Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdd07007aee1da38…

MALICIOUS

PDF

74.0 KB Created: 2021-07-13 03:30:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 087e006edb2b5b7394bf7fcae860d604 SHA-1: 0fe8ea7304e153cd9b3cde624bb30f9447043def SHA-256: fdd07007aee1da387027b8beb8b1a554392e443f5fe16338c904df764e1d5037
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains an embedded URI that points to a suspicious URL, likely intended to trick the user into visiting a malicious site. The ClamAV detection 'Pdf.Phishing.Trojan' further supports a phishing-based attack. No scripts were extracted, but the presence of embedded URLs suggests a social engineering attempt to redirect the user.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2592

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/gPkW7oTCsL0/square?utm_term=simple+chinese+desserts
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ecd29d8bd1c264bea85599/1626133149901/zobokuvavovitekowos.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ecc3f3c38c70342faedc13/1626129395746/japanese_adult_tv_shows.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_off0000c30d.bin
9fa2d75043d3151c6492f3fe5ce4b1d9981094af82573aac74e07234312658db		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC30D 16108 bytes
font_01_sfnt_off0000ecaf.bin
68aac492cfc16fc1ca1f1f0ac7c09f5e87a301c704d4bda7d41af9e95ddad41a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECAF 10572 bytes
font_02_sfnt_off00010486.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10486 16792 bytes

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