Malicious PDF — malware analysis report

Static analysis result for SHA-256 45f7a9713bfcf869…

MALICIOUS

PDF

79.2 KB Created: 2021-07-17 04:20:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 897dd6113cce281b4445d1f1de4555f7 SHA-1: 4f7d642ba2dee64d9d6a3f604f20dcf63798a862 SHA-256: 45f7a9713bfcf86963d01d65483bee9f493892f4c97757e6b164e353cbd1f6ae
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains embedded URLs, one of which is flagged as potentially malicious, suggesting an attempt to redirect the user to a harmful site. The PDF structure and embedded content indicate it's designed to exploit user trust, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6612

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/razvivatel/yapz/~3/gPkW7oTCsL0/square?utm_term=plants+around+us+class+2+worksheets
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec828aa1f8f93f64abad12/1626112650218/7173707505.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f085fd76b47662638be608/1626375677303/sweet_touch_foundation.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f1fda279ed255f8b5ba18a/1626471842935/51105483127.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee871307d0587a37670e45/1626244883303/7275194317.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_off0000d2a2.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2A2 16792 bytes
font_01_sfnt_off0000eab9.bin
07e767b1ec1edbdeed3f1dfe63d340152680436b3e9b180288e0231ebe18948b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEAB9 10776 bytes
font_02_sfnt_off000103ac.bin
be120777d1869cd954ab63802163b30b78365222487076c376dc20062d639cbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103AC 16768 bytes

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