Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c92c072b922baf8…

MALICIOUS

PDF

72.2 KB Created: 2021-07-13 23:27:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d005e6fdae79853c50bd481a6ce85422 SHA-1: e55efe8b8867b5880efaf3ea60d714bb66320458 SHA-256: 2c92c072b922baf83b504a6b1e5458d7a194f5002d7f047fa380242f98625c69
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged as malicious by both ML classification and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, though many are confirmed benign, suggests an attempt to lure users to external resources. The file's structure and detection patterns are consistent with malware delivery via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8727

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/~3/5JeRQhMeIYg/square?utm_term=shippensburg+weather+hourly
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e86bd084b8863bdd3ed9fe/1625844688942/14944646770.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ed9cb876150b527e9ad14d/1626184888493/89523732852.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec8ce89cb57f380a7836d6/1626115304264/95179634949.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e78e741873c46ac934eadb/1625788020547/marriage_line_age.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e7931097884458c99d5d71/1625789200274/social_contract_theory_by_rousseau.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec84b82de985067773a202/1626113209042/how_to_add_text_on_an_imovie.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec8114dcef4a49b3aaa6d7/1626112276834/5063964762.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_off0000bb74.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB74 16792 bytes
font_01_sfnt_off0000d38b.bin
4e25772db9573a124e87cecebb1a9c0cfbf1d7a765e1e6afb699fc689e884a64		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD38B 11044 bytes
font_02_sfnt_off0000ed09.bin
b2f91ee8ed5eae262b378f0e75ef3f05e94b60a048b5ae791b69b0f2c5831901		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED09 15776 bytes

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