Malicious PDF — malware analysis report

Static analysis result for SHA-256 6124e33dc329a6b6…

MALICIOUS

PDF

122.9 KB Created: 2021-07-12 22:52:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 696bfebb63e1048360248258f14e282b SHA-1: 2887cfe4e87d491ae2aee21c1494a55b06f9faf7 SHA-256: 6124e33dc329a6b6f846767c510cbe3f9c3cc855f845370dad4e9f1334f5e4d3
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a phishing or trojan threat. The presence of embedded URLs suggests an attempt to redirect the user to a malicious site. While no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a malicious document designed to exploit users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6890

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/XMoLd4EPXkg/square?utm_term=marx+wages+price+and+profit
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8a555c2f4e855af96f751/1625859413289/9701127987.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec78654c0b954f9ea323c1/1626110053948/tenonusitewigofemim.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e91749dc37083541b863db/1625888585982/vevitavorawa.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8e55d309bd63f3d8302ab/1625875805685/ritifisan.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec77fb154eb17b6848dbcb/1626109947777/kevozafafexul.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_off000181b3.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x181B3 16792 bytes
font_01_sfnt_off000199ca.bin
bc0a3cb93a59d637ac3b824fc45ddd3d68374cfd7d258a964b02bc85a0f8c781		 pdf-font-stream PDF embedded font (sfnt) at offset 0x199CA 10932 bytes
font_02_sfnt_off0001b320.bin
453958fa355b7ada4b2a8e7b01c8b4c429c9dc6d6f090135bdf045447183d2ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B320 17140 bytes

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