Malicious PDF — malware analysis report

Static analysis result for SHA-256 989ea657fb069beb…

MALICIOUS

PDF

83.0 KB Created: 2021-07-19 21:02:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: bedc5a165b27be5c4c1eda402d9ee345 SHA-1: eacac793c6fb6f75ded5a7f0dc2c61876310ff60 SHA-256: 989ea657fb069beb2e03a901cb186c07c1e5b1fa8b88c0a4a8b0c34d03066a82
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF was flagged by a machine learning classifier and ClamAV as malicious. The 'SE_INVOICE_LURE' heuristic indicates the document likely uses a fake invoice or payment lure to deceive the user. While no scripts were extracted, the presence of embedded URLs suggests an attempt to redirect the user to a malicious site or download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5817

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/HbdJGeoIq_s/square?utm_term=class+12+accounts+chapter+7+solutions
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e788daf4d7c53d8b0e6c68/1625786587007/63341250943.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f5475781f38b20589d8d8d/1626687319952/let_me_tell_you_a_story_before_it_tells_itself.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7f3394454ab0ddd86d274/1625813817287/luxury_hotels_of_the_world.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f4ac3eac778402357a7381/1626647614831/jamozebuno.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_off0000e170.bin
aa5165d07ceac1fcab9ffcad16b8759d9db601f7c759afad146ebe60ee887210		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE170 10824 bytes
font_01_sfnt_off0000fa89.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA89 16792 bytes
font_02_sfnt_off0001129b.bin
5ee224e92beb1bedfa9fa18e1e709ffda6e7244cb68e47b5de85dff5ece3237b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1129B 17520 bytes

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