Malicious PDF — malware analysis report

Static analysis result for SHA-256 05ea38d1924edcfe…

MALICIOUS

PDF

82.4 KB Created: 2021-07-15 17:15:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 35de92b349e51012cdb47db235115cf5 SHA-1: eaac611a407e7e2782b87f95fb8745b1c1882e11 SHA-256: 05ea38d1924edcfeaf17d3cf7603638166424ef0dcc71f27dfd0dcacb6f84310
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ClamAV heuristic identified this PDF as 'Pdf.Phishing.Trojan'. The document contains embedded URLs, one of which is linked to a potential phishing or malware distribution attempt. While no scripts were extracted, the presence of embedded URLs and the ClamAV detection strongly suggest a malicious intent, likely related to phishing or delivering a secondary payload.

Machine Learning

  • Nyx PDF Classifier clean score 0.1717

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/RVI1sXQGPkU/square?utm_term=stenography+meaning+in+english
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60eca829478ebe26bfc8ceb8/1626122282128/sitogemegawinupegugagega.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e906a02210ba6bce11282f/1625884320378/inter_second_year_physics_important_questions_with_answers.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60efdade38a0fc3ca96707dc/1626331870517/mean_of_consecutive.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000baeb.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xBAEB 16792 bytes
font_01_sfnt_off0000d2f8.bin
4bd690fc834f7405bd3491f2856304466a5470a019c0af91e9efe04ef04c85bb
pdf-font-stream PDF embedded font (sfnt) at offset 0xD2F8 1688 bytes
font_02_sfnt_off0000daf9.bin
626e8a88dee2a756fcf2ed029d7f70ea3990e455593758850c52be81c5792f07
pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF9 17176 bytes
font_03_sfnt_off0001080b.bin
654701853ad31b3357d9d2b7df07003d6385f01619399306fdf57d2cdbb6d810
pdf-font-stream PDF embedded font (sfnt) at offset 0x1080B 10888 bytes
font_04_sfnt_off00012103.bin
331caee45853e0f8410ee826b7d5738465b85ce9731f2d9d6478c54ce9445c4e
pdf-font-stream PDF embedded font (sfnt) at offset 0x12103 17512 bytes