Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e0057d1d226ec37…

MALICIOUS

PDF

77.1 KB Created: 2021-07-17 15:42:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6e12e23d3c89558df9ededd322f34c24 SHA-1: 3c256ceeace4b80f76cff7f2f2d3fbb242feb024 SHA-256: 7e0057d1d226ec37fe95227574bbd26624e8631cdfb3016642c1fcf03928afcc
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. The presence of embedded URLs, although marked as benign, suggests an attempt to redirect the user. The document's structure and heuristics point towards a phishing lure designed to trick users into enabling content, likely to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8715

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/hIkXU_AiHkM/square?utm_term=enable+commenting+on+pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec8edf11a746407a422d8d/1626115807655/46977781615.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e923dae6bd1231e608098d/1625891802918/56620070849.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e7a0bc69e16759cf7280fb/1625792700154/pujet.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f09e29d4c6c521fcc2d7f9/1626381865795/brand_top_level_domains.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec91109a1cf201f805c69b/1626116368625/71861422617.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_off0000cb5f.bin
e18176af2e83b396cc6721a751fcba1bf70efc1db6f63a8d6989dc9102dfe2d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB5F 16652 bytes
font_01_sfnt_off0000f6c0.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C0 16792 bytes
font_02_sfnt_off00010ed7.bin
b2b5e47d7f6ddf80b6e5a874b31123bcd4f5729ae75f3ad0ad2145035e6b0c47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10ED7 10816 bytes

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