Malicious PDF — malware analysis report

Static analysis result for SHA-256 7301b1cafa48ca4f…

MALICIOUS

PDF

78.7 KB Created: 2021-07-19 05:05:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7cc21205c5bb4ed77684a5b8d2c22b7c SHA-1: d7c5e15e8dcf49b9b7e71e09a4a7da116eec616c SHA-256: 7301b1cafa48ca4f2560c096412f7d849cf934959a03cd96e174f59215362db5
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 embedded URLs, one of which is associated with a phishing heuristic. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a potentially malicious site, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6166

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/qI_NY8u86tA/square?utm_term=peter+gray+free+to+learn
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e943165ebba154a8fd6cb0/1625899799065/67778864651.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ee839b0981f36585a5e80e/1626243995513/44438919745.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ee6a463753dc428c8b03a8/1626237510586/sakenulugapefumuboxofoju.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec87f0dd2ac847ff7f0d8a/1626114032456/lapufudo.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_off0000d3e5.bin
3da92a5d983e6644258851981b9d696e107eae535a6641346e5f85aae3eaea53		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD3E5 16796 bytes
font_01_sfnt_off0000ffc9.bin
507b7c4f1838938eb01d4877dd0c65397b3a4cf66aac2da43493184ddc406ef9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC9 10244 bytes
font_02_sfnt_off00011706.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11706 16792 bytes

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