Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d2a2b640d849402…

MALICIOUS

PDF

82.1 KB Created: 2021-07-17 06:39:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5a507cc977b813c9232e3c3998ac727c SHA-1: de7f7fb7d6785caccbbe5b0a7f580b330e313a88 SHA-256: 0d2a2b640d8494026a88b9221ae94378a0b2eb56ee86844c148c967542a766a1
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan. The PDF contains embedded URLs that point to external resources, suggesting an attempt to redirect the user. While no scripts were explicitly extracted, the presence of PDF-specific heuristics indicates potential for malicious PDF actions, possibly involving JavaScript execution.

Machine Learning

  • Nyx PDF Classifier clean score 0.1542

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/aauXj3bnHUA/square?utm_term=how+to+delete+unwanted+blank+page+in+word
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec8dcd934d360eb2890588/1626115533797/average_cost_of_furnace_blower_motor.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec8fadbcf8be39b5063399/1626116014108/united_feature_crossword_puzzle_answers.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_off0000df89.bin
10cbf760af422165befad41b5cc0c73e52b9eef57d23596dd2cf64e355b3fedc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF89 16972 bytes
font_01_sfnt_off00010c05.bin
fdb1fbef0ff3cb3da563cb90c22035b32c21cc085058f206caf262b251e4962b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C05 10808 bytes
font_02_sfnt_off00012496.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12496 16792 bytes

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