Malicious PDF — malware analysis report

Static analysis result for SHA-256 d72df15a878a266b…

MALICIOUS

PDF

76.9 KB Created: 2021-05-07 16:29:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65796c02f09fe465b1e9fbf72da4454d SHA-1: 284e206080a3dcaf9e606d468654a6cfcc6a2048 SHA-256: d72df15a878a266b9c600872e13673ef401bd267f8d48e2b7b7ae886403c5ee0
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains embedded URLs pointing to potentially malicious content, suggesting it's part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to medical information, likely to trick users into clicking malicious links.

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://www.expoagrogto.com/wp-content/plugins/super-forms/uploads/php/files/cku83j8atbbma1e80ogfkghia4/wipul.pdf
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16076512cde81c---tivasigiruxewexifalo.pdf
    • https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/d1cbd94a2207a9b94d1e4550d857b828/32320547966.pdf
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc379f2eeb---40643222259.pdf
    • https://www.charityweiss.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607a1b23840db---90980899812.pdf
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/799c90b412a4d8d50c838e66e50e8744/vedidokebediwebup.pdf
    • https://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087630a51474---7393336604.pdf
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/0ba888f26df62a33928181753c890e4c/mosavokipudinep.pdf
    • https://motelandratecuci.ro/userfiles/file/86101720932.pdf
    • https://q-web.ro/wp-content/plugins/super-forms/uploads/php/files/3uq2kvamgbnifmfk992314ushi/bedaxaxinonuluzunotorok.pdf
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087350bd82b8---67096382382.pdf
    • http://au-coeur-du-temps.com/userfiles/file/91078895284.pdf
    • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/564f33085816995e5da06aa956d66862/namigoriroj.pdf
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/9fdfe009ef0af87142a9ee73c856a6f3/givesigufivoxi.pdf
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607db6596d888---rafipumef.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=que+es+anemia+megaloblastica+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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e075.bin
1490367ac85e22ac6e5601a134eb234106c20e0f5220f944a7f8f3a54936cc7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE075 5460 bytes
font_01_sfnt_off0000f2ea.bin
d9f8260e68802d0bbb4da899b40487a838ccb6893982ee81c792a7817d2d8cdc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2EA 11032 bytes
font_02_sfnt_off000116ff.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x116FF 4324 bytes

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