Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6b6f288c7e0c574…

MALICIOUS

PDF

84.2 KB Created: 2021-07-18 20:40:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 84c35ca6e754c89787603064107a84d8 SHA-1: 8630ebe1764b4ab9dfcd6a8ac50d0cea5a1b7294 SHA-256: e6b6f288c7e0c5747ed09eab6d0ecc6220832c6b305fddd96204c00b4c8dc3c1
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF with a high ML classifier score and ClamAV detection, indicating malicious intent. It contains an embedded URL that, while currently flagged as benign, is part of the attack pattern. The PDF structure and heuristics suggest it's designed to trick users into clicking external links, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5817

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/mHcMeCcfVl0/square?utm_term=aeon+post+tension
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee15440981f365859f1ad3/1626215748780/38779203971.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee8db2df274736e0afe32f/1626246579084/fumokigivizogu.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f3aeb91ad9bf1c32b85e1a/1626582713907/worawi.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec7dd5e64ce5371634428e/1626111445524/morusaxisalijepem.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_off0000eb97.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB97 16792 bytes
font_01_sfnt_off000103a9.bin
75f8858b519f6395f45db65df9e8dfc60ec171738839cadb2e0fa0d110ba6dba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103A9 16768 bytes
font_02_sfnt_off00012f7b.bin
2c52bcb63fd88496efa74077c937ab2a52c70bdce9b73083274f2a07a68844f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F7B 9920 bytes

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