Malicious PDF — malware analysis report

Static analysis result for SHA-256 e21680620fa08f6f…

MALICIOUS

PDF

92.1 KB Created: 2021-07-13 17:10:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 24458e6842afb218eb0dee0a867afb9c SHA-1: 63c7f4182f66e957c961f5bf1f92cce1eb3f2d83 SHA-256: e21680620fa08f6ffbb910f65920df36564d018a0023754e2c1d406d0eeb5045
96 Risk Score

Malware Insights

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

The file was identified as malicious by ClamAV and an ML classifier, with heuristics indicating the presence of external URIs. Although the document body is heavily obfuscated and unreadable, the PDF structure and the presence of embedded URLs suggest a phishing or social engineering attack. The primary URL found, while marked as benign in this context, is indicative of the type of lure used in such attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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/gPkW7oTCsL0/square?utm_term=feasibility+study+on+grasscutter+farming+pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e88a5d820e305b049ea143/1625852509285/falling_in_love_with_you_gary_moore_lyrics.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e91af73f195e1e4036248f/1625889527321/the_expendables_1999.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e866b709f15045325b42f5/1625843383459/can_u_paint_over_silicone.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e83258dbb92d34f5b2155b/1625829976700/the_beginning_of_everything_read_online.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ed6bff6b40a9602c96e34a/1626172415605/sisasafem.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ed267c8c96c6301f9163f3/1626154620976/93792624901.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e8890e505f7d6422dd9bc1/1625852174495/foxebamekevazafule.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec7e0fbdd82073f6fe7bc0/1626111503760/89787806082.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ed339266c2900cf55e81ac/1626157970640/51575206402.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e79c86f4d7c53d8b0fc243/1625791623019/87527898646.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7a543687a3d659a4932de/1625793859615/legal_firm_names.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_off0001039d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1039D 16792 bytes
font_01_sfnt_off00011baf.bin
4429edcab141f3d31d918cd248f743b673ca587fb20ce09e0720962b4d8090b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11BAF 17552 bytes
font_02_sfnt_off000149c8.bin
80e321323dee25482c8725aefd57f3bd42e3be7fbcef6050fee69546a369506f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x149C8 11292 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.