Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5f2d5962c146c8d…

MALICIOUS

PDF

78.0 KB Created: 2021-07-16 12:40:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 18559426abdc503a4d172a5ad3f68e3e SHA-1: 4c0d36288b3b552cef7a4e59b60e0f491af70828 SHA-256: f5f2d5962c146c8d2db7ea239334b241feea0e959b59ea95cf7945d7e7634c66
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an embedded URI suggests an attempt to redirect the user to a potentially harmful external resource. While no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8621

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/qI_NY8u86tA/square?utm_term=watch+instagram+private+profile
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60eda959573bc4731c8a9cac/1626188122140/evidence_for_the_theory_of_evolution_answer_key.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec79710cf33f708d795a7f/1626110322056/vekukor.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f129b62c92ee1dddde18e2/1626417590800/conventional_morality_psychology_definition.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e96023e51f1f218d6bbfea/1625907235803/introductory_participial_phrase.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e89b747ad5601299592bd4/1625856884893/what_to_read_if_you_like_stephen_king.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_off0000d026.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD026 16792 bytes
font_01_sfnt_off0000e838.bin
08036c9553d2718ffebf961766d03a110058ea20da32996b980fe465e0376395		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE838 16444 bytes
font_02_sfnt_off000112ca.bin
4085de98918e21a2b052c63e459d801fb078823dae3aa9a1ba84d4696158f61a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112CA 10984 bytes

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