Malicious PDF — malware analysis report

Static analysis result for SHA-256 16778ee7d658a9a7…

MALICIOUS

PDF

72.3 KB Created: 2021-07-13 06:41:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6a4e5c88c5d2e767e14d94077348f236 SHA-1: 949ae22690cb9662499cfb5b63a88614be2eabe0 SHA-256: 16778ee7d658a9a7db8c91e81795ae0a07f8a6a711127712eefcd9793ed51b6f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. No scripts were extracted, but the presence of the external URI suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6030

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://oniceh.ru/square?utm_term=qwerty+keyboard+to+azerty
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ecf7c39db072196a1c6dac/1626142659232/the_forced_bride_of_rodriguez_book.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ecee7c66c2900cf55a78a9/1626140284583/best_meat_for_hungarian_goulash.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec89580d838b6c850d87dd/1626114392167/chicken_and_bacon_skewers.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8c22fc3dba77ad33545bb/1625866799699/dentistry_interview_questions_and_answers_with_full_explanations.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_off0000bb95.bin
d0a486642431ba69edca94c8e59fc5b795de9aab86e4408646a1bb76f511e6a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB95 16280 bytes
font_01_sfnt_off0000e58d.bin
147c95d1c7864baa8b208b020e233fae88fec6990747099da54e8f89e089472d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE58D 10384 bytes
font_02_sfnt_off0000fd64.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD64 16792 bytes

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