Malicious PDF — malware analysis report

Static analysis result for SHA-256 82381f6d4cb22402…

MALICIOUS

PDF

77.3 KB Created: 2021-07-14 01:21:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: dcca8d7dd277525e98703ea48afb80ae SHA-1: ef27e4428b3807aaf0a434fb586c2c2f0330cc6f SHA-256: 82381f6d4cb224023cc357fff4368769652b64b96599c7898d519af55c722568
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. The embedded URL, disguised as a search result, likely leads to a phishing or malware distribution site. No scripts were extracted from this sample, and the document body was unreadable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9125

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/UZrB20b2Dcg/square?utm_term=cabinet+minister+of+india+2020+pdf+download
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e882c396867b2f2dae689a/1625850563973/different_types_of_oil_expeller.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ee02910229956bd13808b0/1626210961276/2944186070.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e843a6713f321619886491/1625834406125/small_talk_about_food.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee0d05fc191471fc68c7f3/1626213637970/zebigabalimukan.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e817e4a431ed42d2fe5491/1625823204803/writing_a_resignation_email.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_off0000cd31.bin
6eb60b3ea8574c3f218a048418db23eddda965e4956a83a1fda53546c5239198		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD31 16256 bytes
font_01_sfnt_off0000f746.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF746 16792 bytes
font_02_sfnt_off00010f5d.bin
73d45b6be2a65f23340f982d4d64aca9dee97e4e5bc5cd642b73cbdba58cbd20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F5D 11160 bytes

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