Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9de369f21faf855…

MALICIOUS

PDF

74.6 KB Created: 2021-07-14 00:45:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a94402746f218e340dc864a59ef7933c SHA-1: 85534dab9482585a5ec5306ab77da4d184050ec5 SHA-256: b9de369f21faf855a9c4ccecc6b80795e327415e91b13d65a3693021b943512c
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded URI that redirects to a suspicious domain, indicating a phishing attempt. ClamAV detection further confirms its malicious nature. The file's structure and embedded URI suggest it's designed to lure users to a potentially harmful website, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2687

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://allytemp.ru/square?utm_term=myrt+and+lucy%27s+chat+%26+chew+family+restaurant
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e786ac2a59c44508a9681a/1625786028228/46388326008.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e929fc37cb904475604a87/1625893372695/coping_strategy_scale.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_off0000bfbd.bin
fe9b83d989feef87993ef3fed2f9a9744448530dc303e3d92dbf2d7a9903d80f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBFBD 10364 bytes
font_01_sfnt_off0000d725.bin
28d75b32194fe024e2cc5bd32353b6811050e9c0824d0af983b65b68f323f85e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD725 18160 bytes
font_02_sfnt_off000106ec.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106EC 16792 bytes

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