Malicious PDF — malware analysis report

Static analysis result for SHA-256 df9802ab89466766…

MALICIOUS

PDF

169.0 KB Created: 2021-07-16 18:31:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d11cb836eda574e156d5b1e91039d3f2 SHA-1: 2c4e157f659e7aa9ee822d8b637e718d1a769d82 SHA-256: df9802ab894667664a98ac3ecd4d6a3702662b10e9130951c6912af56fdf2b42
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 phishing or trojan threat. The PDF contains embedded URLs, suggesting it may be used to lure users to malicious websites or download further malicious content. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious intent, likely related to spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5298

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/hIkXU_AiHkM/square?utm_term=the+path+of+the+smart+grid+pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8ce63cb474813b85b7269/1625869923252/155_cm_in_feet_and_inches.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e93a6fc14ff043cd5dba69/1625897583802/64703441531.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e938d9c22c005c93397c06/1625897177530/the_haunting_of_hill_house_rotten.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec9d979cb57f380a7a03c4/1626119575700/50566415715.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edfced670c344ea7604217/1626209517430/mission_trails_stables.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_off0002330b.bin
d19ca5be4bd2b222fe8e581d4b6daf7c1606c310b1af3f58d636c4c8651e729e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2330B 20248 bytes
font_01_sfnt_off000266fb.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x266FB 16792 bytes
font_02_sfnt_off00027f12.bin
e44955e903c9c3fa1340c0cae0d34cdb38e7af762310aee7b899bff82ba93a64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F12 10760 bytes

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