Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc80b6c794aad758…

MALICIOUS

PDF

76.2 KB Created: 2021-07-19 04:32:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a7e6b68b3d2da0a6f6597523fa95582a SHA-1: 235ff9a7e43d61a5f4bf0f438a302997bf1b7b90 SHA-256: fc80b6c794aad7586ddf1cf3c7234c5e72b1f6c226d96dcd194787360bbf15c8
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains embedded URLs, one of which is flagged as potentially malicious, suggesting it may be used to redirect users to a phishing site or download a secondary payload. The PDF structure and embedded artifacts do not provide specific script execution details, but the overall context points to a malicious document delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7703

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/iCUEKX862tE/square?utm_term=how+to+stretch+shrunken+shirts PDF link annotation
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f15bd3fe1af12ac2c591ad/1626430420031/62836802762.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f47279b386920ff6d81b77/1626632825333/34130270374.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e771a13bc03b46d747c82a/1625780641545/37887423633.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca68.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA68 16792 bytes
font_01_sfnt_off0000e27a.bin
7d2495ce6463d7665504fcc859c20540d97e6e780bbc98c3c92a306acf550ae1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE27A 16700 bytes
font_02_sfnt_off00010d95.bin
0702eb7a9d15265fa520d2b2e9f9d16485fb76ccd7484560c88d07a598a98451		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D95 10388 bytes

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