Malicious PDF — malware analysis report

Static analysis result for SHA-256 32c03eb88eaf990d…

MALICIOUS

PDF

73.1 KB Created: 2021-07-16 12:58:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 80c5a8e5311e941fb9ca20763fb571a4 SHA-1: ce74b8e8b0b2fe34d524aa91f0972bad83dcb425 SHA-256: 32c03eb88eaf990d0530d18009c559799e483bedb13d393ee7b9eeb349673808
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ClamAV detection and ML classifier strongly indicate maliciousness. The PDF contains embedded URLs, suggesting it is part of a phishing campaign or a downloader for further malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URLs are common in phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6751

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/~3/5VO7y1TeAqQ/square?utm_term=is+fuller+house+cancelled
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f0885374a6ac748a284593/1626376275411/tebuj.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f11d706e9a9a494aa4feee/1626414449268/handy_seamless_transitions_after_effects_free.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f055d2b9070f061f2d7b44/1626363346995/71474908303.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_off0000c03e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC03E 16792 bytes
font_01_sfnt_off0000d850.bin
7c607c1cadaf29c2c8c87a68a75c66247a6625789b284a3037e48124db419979		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD850 15944 bytes
font_02_sfnt_off00010166.bin
088117c14d674a53a21b1c7b421d153fef92a8fcf092caf836c44c05360f171c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10166 10432 bytes

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