Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a2166b400ee307b…

MALICIOUS

PDF

76.9 KB Created: 2021-07-19 18:16:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: aece825b5c0c41237c32003e0c5bd0fa SHA-1: 46563f3f2abd39d13721977bc7415999736166be SHA-256: 9a2166b400ee307b2e0519b9759662842afd9c9ab240865e82362d38d8fb6699
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded URLs, one of which is flagged as a potential phishing lure. Although the document body is heavily obfuscated and unreadable, the presence of these URLs and a ClamAV detection for 'Pdf.Phishing.Trojan' strongly suggests a phishing attempt. The file's structure and embedded content are consistent with a malicious PDF designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3002

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/iCUEKX862tE/square?utm_term=childhood+apraxia+of+speech+2+year+old
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec8d547a6a162676494700/1626115412121/63552721107.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8784d228db43b00a2520b/1625847885140/english_magazines_in_india_free_download.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_off0000c7ec.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC7EC 16792 bytes
font_01_sfnt_off0000dffe.bin
a97e4a6bc7751d08ad28d685afba64f3a9947ef57055fa7662d11eb91258b7f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDFFE 17152 bytes
font_02_sfnt_off00010ce6.bin
da42ee1879e7d34d62054440de5415af8bd88938ae88117af98611ae76cd1cbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10CE6 10884 bytes

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