Malicious PDF — malware analysis report

Static analysis result for SHA-256 146ee8b0f23d2fda…

MALICIOUS

PDF

73.5 KB Created: 2021-07-12 21:58:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 915f78fd14ad8621a925b53acafb10ca SHA-1: fe63bfb501609f40ee35fa7ed1419b5c154f6ccf SHA-256: 146ee8b0f23d2fda27c7624d3c59077c292730a4145af2cd28ae2817872ba6b0
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The presence of embedded URLs suggests a phishing or redirection attempt. While no scripts were explicitly extracted, the PDF structure and detection indicate it's designed to exploit vulnerabilities or trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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/AG-UZpNbJGc/square?utm_term=colin+rowe+transparency+literal+and+phenomenal
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e90927309bd63f3d852caf/1625884968038/71830347026.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e95d06085b1c120f9a00ee/1625906438125/medorepetoxi.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e9330f8ce0e10532d343e3/1625895696089/nogoramutuxa.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e7f8484aaab0286a8bb528/1625815112315/16213557343.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e819a551cb2a526cff00e7/1625823653775/piwukolakev.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec8c9d7b14134336dd51e8/1626115229414/mezcal_is_made_from.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e7aae9bab062161335ab18/1625795305406/you_can_do_it_put_your_back_into.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec8b440d838b6c850dcd1d/1626114885019/9602286666.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec7b92668ba31612b5400f/1626110866852/net_present_value_method_of_capital_budgeting.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_off0000b987.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xB987 16792 bytes
font_01_sfnt_off0000d199.bin
35f94a8d626ee8a1941296bed7923174e916bb5ce9d7ff0d27f82ad0d5b28103
pdf-font-stream PDF embedded font (sfnt) at offset 0xD199 17400 bytes
font_02_sfnt_off0000fdf6.bin
68726e91568a7ee93a7daeb9239f26e8ab58ab703362965e75c42a6600edb9dc
pdf-font-stream PDF embedded font (sfnt) at offset 0xFDF6 11008 bytes