Malicious PDF — malware analysis report

Static analysis result for SHA-256 869a325cdab9f9ae…

MALICIOUS

PDF

78.0 KB Created: 2021-07-12 22:47:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e6430280c4c9ef6299b30a73e3861380 SHA-1: 0df38a175cd72d8231d9ca0da6fa1e8e2964221c SHA-256: 869a325cdab9f9ae7c88ae435cd941061e13017e02cb1649a6cd8a981a3371b4
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected by ClamAV as a phishing trojan, indicating malicious intent. It contains multiple embedded URLs, some of which are associated with benign content, but the overall detection suggests a phishing or trojan delivery mechanism. The PDF structure and embedded URIs are consistent with attempts to lure users into malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier clean score 0.1467

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/UQ8tT55rDuk/square?utm_term=three+minute+therapy+pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e78eb1872c4c6263c044fa/1625788081719/budevu.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e777c5cf132e35f05473a6/1625782213853/banufetobofatew.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_off0000d328.bin
5b73dcb2083d6b5d9e5c0fd3fbd3dc5ab1c48f2d52364de9cffd50e8e1634780		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD328 10608 bytes
font_01_sfnt_off0000eb2d.bin
feb195ac83120631f7691e9292f03c8642680239080fecc85ef78f93be7f4a12		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB2D 16200 bytes
font_02_sfnt_off000114c1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x114C1 16792 bytes

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