Malicious PDF — malware analysis report

Static analysis result for SHA-256 486512010a02af7e…

MALICIOUS

PDF

78.0 KB Created: 2021-07-15 19:31:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 881bed4ae0c1c53a51261236effde9d5 SHA-1: 9a1ccd4fe760ce2468103e57869a45a7147146d9 SHA-256: 486512010a02af7ef46f844f9b4af86d4c1a367aba920652d00b492135e8f93b
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 high likelihood of malicious intent. The presence of embedded URLs, despite some being marked as benign, suggests an attempt to redirect the user to potentially harmful content. The PDF structure and embedded artifacts do not reveal specific scripting, but the overall detection points to a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8957

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/r_nBws6J8g8/square?utm_term=great+teamwork+synonyms
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60efd282b3de5a36b124ea4f/1626329730410/anxiety_in_the_bible.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e78515f36ca051df76e2ae/1625785621929/modals_of_permission_and_prohibition.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60efdd9e79f953043cbd1221/1626332574471/ponepofagolo.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec796054a52c186ce3d8fb/1626110304185/andrew_wiggins_married.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ed92b1f2de0a6ebf353da5/1626182322042/5574642644.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_off0000d38f.bin
89d61af7c752ce105e7beb04886c8e588144a896d7e892a2673be7f8318d5ea4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD38F 15872 bytes
font_01_sfnt_off0000fc63.bin
d1fdc24f9b79d9213f37ebe1d0982e3b9a6609c5cd85a67dd84bc03a0d80563a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC63 10464 bytes
font_02_sfnt_off0001144b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1144B 16792 bytes

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