Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b48419cf6f3de29…

MALICIOUS

PDF

74.3 KB Created: 2021-02-25 22:39:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cecdb3a5bb73524218da0d2ea7dd2a7c SHA-1: d7cade9a03d90c3062a47cb4e7f3b0a877737517 SHA-256: 2b48419cf6f3de293522d7652add4d78610c9baf7678847a1321fb587b4c89c7
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that leads to a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to 'Richard III death', likely to entice clicks on the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://crophysi.ru/123?utm_term=richard+iii+death
    • http://rating-bookmaker.ru/netoseteremanigusesitemh2.pdf
    • https://cdn.sqhk.co/rajosibakulu/tQsieja/49698123360.pdf
    • http://mirror-x.org/85728764681pwb3s.pdf
    • http://winoorama.fun/bobukulog3l9j.pdf
    • https://cdn.sqhk.co/zulatobi/ibEvgf4/85240585067.pdf
    • http://larts.digital/wipiwovufexokil3wye.pdf
    • https://cdn.sqhk.co/wifopuzuxiba/IwThhhj/draw_it_too_iron_man_mark_85.pdf
    • http://arboozfilm.com/haughtiness_crossword_answerskpk5.pdf
    • http://jekeluxuto.mywebcommunity.org/65160822517.pdf
    • http://xuwuvewisin.mypressonline.com/is_windows_server_2008_end_of_life.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://rizivubonulej.atwebpages.com/bolens_riding_lawn_mower_spark_plug.pdf
    • https://s3.amazonaws.com/teximikamukubo/the_making_of_star_trek_stephen_whitfield.pdf
    • https://s3.amazonaws.com/zetubakuz/dead_cells_android.pdf
    • https://s3.amazonaws.com/begijufadi/hypoglycemia_guidelines_2009.pdf
    • http://pusapovewazigu.onlinewebshop.net/kitchenaid_stand_mixer_cover_diy.pdf
    • https://s3.amazonaws.com/muvevanepen/idsa_guidelines_hepatitis_c.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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e943.bin
8f689c96f47dbebd1361dca7c782599751e678a8e1c43c4c61f1cb85ccbb46fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE943 4824 bytes
font_01_sfnt_off0000f9a4.bin
fe6dc0d04da3754bffb7ca4d45c4570e2b45b01bfb7b6e03f2007a0ed8586462		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9A4 10268 bytes

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