Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe23380012c33043…

MALICIOUS

PDF

78.2 KB Created: 2021-07-20 15:47:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 195bf9594493675318d2ba6d75e5d128 SHA-1: e77f01d9bfd87cf3611a3c1be7016921ca5a044e SHA-256: fe23380012c33043869df88a806f2eade814887fa6de325e04d3e4eeba7302db
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating it is likely a phishing or credential harvesting attempt. The presence of embedded URLs suggests an attempt to redirect the user to a malicious site. While no scripts were explicitly extracted, the PDF structure and heuristics point towards a malicious document designed to exploit users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6556

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/eaN1Eb74jJI/square?utm_term=difference+between+movement+along+supply+curve+and+shift+in+supply+curve
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f12aabf9088a713e6a1f37/1626417835409/74761618410.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f02b7136870d1a2db95b93/1626352497605/54119938832.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f59e06578b8e70bd3df618/1626709510227/81326533849.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_off0000cee0.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCEE0 16792 bytes
font_01_sfnt_off0000e6f7.bin
3379280258cb0470e985a9118c6f31d9429d435a039d6088af126ae864454724		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F7 11576 bytes
font_02_sfnt_off000101e7.bin
490cdf833e66d8ec46607dc928baf40a3b0336622d5f523727955e2ca58ada82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101E7 16408 bytes

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