Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd0af2a7c25ca2b6…

MALICIOUS

PDF

103.8 KB Created: 2021-07-13 05:54:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 93dfdef80c8d4ab46d03f64c568d2dde SHA-1: 21c5cb48240cda1d08169bd81536f013fbb76b8f SHA-256: bd0af2a7c25ca2b658ff4f560d9ca2dab6aacbc4acf5af1307c46011108febae
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 attempt. The PDF contains an embedded URI that likely leads to a malicious site. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect the user to a phishing page, potentially leveraging embedded JavaScript for obfuscation or redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5412

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/CcIy6vlvkUk/square?utm_term=period+cycle+length
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec7acedcef4a49b3a9f058/1626110670815/wazivikebikazotumikoxo.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec9333af807f1e1526b0a2/1626116916019/laurel_hill_state_park_trail_map.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e91f34f492d21a0f6ada78/1625890612791/wusapokurup.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60eccd8173547a433e2772d3/1626131841842/negative_effects_of_money_laundering.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_off0001367d.bin
50f32d586dbb2ce71e42a5ea6fb309db125c92bd3aee21389d9816278f8c875b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1367D 17436 bytes
font_01_sfnt_off00016461.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16461 16792 bytes
font_02_sfnt_off00017c78.bin
a5c1e719b6d4961589e8c716738167ca8fd14f23ebd65b9fcf643285b9b2e236		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17C78 10432 bytes

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