Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba995ae12d7d47e5…

MALICIOUS

PDF

78.6 KB Created: 2021-07-14 03:11:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5ee6b878efc8ba8c2049aecfcdc5ff35 SHA-1: 7375685c687c3fd0412a57642fc3b323ad65e1a8 SHA-256: ba995ae12d7d47e52858a8e0e726d01a59c9ed5033507300bcb2be973501357f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple security heuristics and a machine learning classifier as malicious. It contains embedded URLs, suggesting it is part of a phishing campaign. The ClamAV detection of 'Pdf.Phishing.Trojan' further supports this assessment. No scripts were extracted, but the presence of external URIs indicates a potential for downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6556

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/~3/4Ji06Fp1PxY/square?utm_term=apa+formatted+annotated+bibliography
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8d240c158db2a32daa638/1625870912171/balofi.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e7a90338ed220952aab8e1/1625794819706/vawedila.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee12d59b1e4d6a3609d26f/1626215126093/beamng_drive_unblocked_at_school.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_off0000d49e.bin
511573354e9c056b2b96b507f58d110e01c1f812a6639ea74b07f70affc604c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD49E 15976 bytes
font_01_sfnt_off0000fdaa.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDAA 16792 bytes
font_02_sfnt_off000115c1.bin
2e33728c46e70f4c46642b037d1fb6cae3ab55c606c7a93df63175ca61bc7a08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115C1 11012 bytes

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