Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5076a93711cddd3…

MALICIOUS

PDF

76.3 KB Created: 2021-07-14 08:31:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a8422cc375746bd647a454ca774ca518 SHA-1: aeb4fef055620f87e702c299d196ff1ae4397c39 SHA-256: f5076a93711cddd3189ac9f7948102095355485a74043b23c5977abb02240768
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The presence of an embedded URI suggests the document is designed to redirect the user to a potentially harmful external resource. While no scripts were explicitly extracted, the PDF structure and embedded URI are consistent with phishing or malware delivery tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9125

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/cEZ-xJcQpFE/square?utm_term=watch+dragon+ball+gt+dubbed
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60edcbaccc8e436e4663a0f2/1626196908750/how_to_find_bmi_manually.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ed8e42ff6d86145ba2029d/1626181186962/86704922702.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec941558d864752e0272b0/1626117141744/guxexiwonawifizurut.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec8444d0153e73bf8be199/1626113092205/jobovogarur.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee0fed2d09e34b729cbf08/1626214381478/auto_populated_meaning.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_off0000cb19.bin
590c595f6ed68664a1a72c5c31b9df9879ee272a1e5459dafc2a1e89383284ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB19 10624 bytes
font_01_sfnt_off0000e331.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE331 16792 bytes
font_02_sfnt_off0000fb43.bin
149f2b86e543af850aba48a7db7bf4a6a9481055475911950192d53847b388eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB43 16348 bytes

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