Malicious PDF — malware analysis report

Static analysis result for SHA-256 8292ea7564315578…

MALICIOUS

PDF

87.1 KB Created: 2021-07-16 00:39:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1bdc117ecb6f869d76229a5ba3896358 SHA-1: 54a8230c31191a41c731deee013e9c5ef02254c9 SHA-256: 8292ea756431557805b9b17e2e198b97325a53c611c4e54eef4a7cae37973fa8
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an embedded URI pointing to a resource related to 'free online pdf editor' suggests a phishing or social engineering lure. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are consistent with techniques used to deliver malicious content or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6839

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/J-SxIuB37Ms/square?utm_term=free+online+pdf+editor+cut+and+paste
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60effaae1e1a563dfb8da04d/1626340014325/25234767832.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee27b3462f394a1e408bfe/1626220467564/the_old_station_guest_house.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60eca58177250868136ff2ca/1626121601971/chartres_cathedral_architect.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ed0b37840a1961e7b22f18/1626147639554/nickel_and_dimed_chapter_2_summary.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f0aa5018c81c76616c1a94/1626384976551/whmis_training_test_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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db8a.bin
db616033260fd770dceba1582cc386f736d6f9d37b347c80d1b1676b7e18a81b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB8A 10688 bytes
font_01_sfnt_off0000f41d.bin
a11e0df83f0af6d3bac51a019b31582b1848df5b35fa638861f09b8d64d953ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF41D 17276 bytes
font_02_sfnt_off0001217c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1217C 16792 bytes
font_03_sfnt_off0001398d.bin
439f91fc52918ec11de7c10fc66f42d556e3ca0baf24f0cec7590a9fe4e8f18d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1398D 16392 bytes

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