Malicious PDF — malware analysis report

Static analysis result for SHA-256 de0bd0517bd709a6…

MALICIOUS

PDF

77.8 KB Created: 2021-07-19 12:09:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2e1d0d474763849fb82508f3dc339f1c SHA-1: fb96165303d462c9f4402a1a358fe7eba8a13222 SHA-256: de0bd0517bd709a608ea931b3c7b2bce2b69abd229c2cda7ce7f4a196f1df4d1
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The PDF contains embedded URIs that point to external websites, suggesting an attempt to redirect users to malicious content. No scripts were extracted, but the presence of external links is a strong indicator of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7483

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/S-4CHg4Qmwo/square?utm_term=what+is+the+function+of+stigma+in+a+flower
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee3b8e9b1e4d6a360d20dd/1626225550781/xofujakemaxume.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec84244c0b954f9ea427ca/1626113060944/sedep.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f34110503a21671790cd23/1626554640793/how_to_get_gems_in_shadow_fight_2_for_free.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e9411637cb90447560ef20/1625899287087/1_gig_to_kb.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_off0000cf6f.bin
9e315ecdd4238205a86790aef13cbf51199e7f13f64ae9fdd9bbd0fd2da38107		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCF6F 10960 bytes
font_01_sfnt_off0000e8ba.bin
2353f209d309ec5d16b972dd3d5577b1cf4cab0732ac7838ffa19121f0b13711		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8BA 16404 bytes
font_02_sfnt_off00011376.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11376 16792 bytes

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