Malicious PDF — malware analysis report

Static analysis result for SHA-256 d970266c5ab2c089…

MALICIOUS

PDF

82.4 KB Created: 2021-07-17 12:56:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ba09e2fde08473a31979abfb5d827796 SHA-1: f9bd0ccd81fe3b25e5c977578beb2236978f36ff SHA-256: d970266c5ab2c089c9c6cf84074600df18a47f86ba53c0214c92ffebe3f945b7
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a signature indicating phishing and trojan activity. The PDF contains embedded URLs, one of which points to a resource that could be used to host a malicious payload. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier clean score 0.1542

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/qQn0o4eTdIQ/square?utm_term=spring+street+courthouse
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7765e1bd7543d7b5bdecf/1625781854911/a_passion_project.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8f028e370ac632286cc3e/1625878568168/get_crunk_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_off0000e2de.bin
f1563cd58ef505c0a570942bdad58f819ac5c9300cfc0b5a462ce33303687e53		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2DE 16488 bytes
font_01_sfnt_off00010df5.bin
620e496b9bbefdb1dbc108332933479141cb09b64b7ac368b76dfbddbceb2a68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10DF5 10620 bytes
font_02_sfnt_off00012623.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12623 16792 bytes

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