Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f9822bfae5736fb…

MALICIOUS

PDF

77.0 KB Created: 2021-07-14 07:41:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d1fb25e844a0e0dfc46a7f094b74caa2 SHA-1: 5df1751a03d037b564d3988963ff6361ced2f9c0 SHA-256: 0f9822bfae5736fbd30f69b55e31d87c830d7a35f3510b92072bbe79ba2a7856
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains an embedded URI that points to a URL, likely intended to redirect the user to a phishing site. The PDF structure and embedded content suggest an attempt to exploit user interaction through a malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9163

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/CcIy6vlvkUk/square?utm_term=clash+of+clans+th9
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e94b1bdb8bb141bada9878/1625901852123/1766830970.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee26cd27fa864c7d101686/1626220237306/warehouse_clearance_outlet.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec853f2de985067773b2c6/1626113343730/q_of_spades_meaning.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee17089b1e4d6a360a28c7/1626216200371/sudinerebij.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ee1c772d09e34b729dd68b/1626217591591/previous_year_ca_question_paper.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e7682df4d66f229d3f6459/1625778221550/tujadon.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60edee0c3e0111437129fe75/1626205708578/masawawifojodirade.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_off0000ca28.bin
80c4b465aed651c077365c8d1208507a200274a488f1e4954a73ee6c4035afeb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA28 18168 bytes
font_01_sfnt_off0000f90e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF90E 16792 bytes
font_02_sfnt_off00011125.bin
0ddf4fc162cbee0a4f2d8585df85e756721009a03fbd89203378ab32bd22e0d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11125 10308 bytes

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