Malicious PDF — malware analysis report

Static analysis result for SHA-256 13fa99bd9b4cab45…

MALICIOUS

PDF

77.4 KB Created: 2021-04-02 07:58:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59bc71603687689976d3858da78e09f1 SHA-1: b96f064252050b232bb8432f3a0fcdd3909622f8 SHA-256: 13fa99bd9b4cab4569a00f6fd3ff60434a7343510447a213d0403a9cb8788f59
96 Risk Score

Malware Insights

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

The file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains embedded URLs, with one prominent URL pointing to a phishing site. The presence of these URLs suggests the document is designed to trick users into visiting a malicious domain, likely for credential harvesting or further malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://vilenefex.ru/wix?keyword=borderlands+2+sham+fleeting
    • http://xetelafeke.iblogger.org/zikedepavozanepus.pdf
    • https://static.s123-cdn-static.com/uploads/4484380/normal_5ff1c2b6032a3.pdf
    • http://jibiduseg.22web.org/archicad_19_keyboard_shortcuts.pdf
    • http://mukoxadetovewo.66ghz.com/vals_de_amelie_piano_sheet.pdf
    • http://jabofuzo.22web.org/how_often_change_power_steering_fluid_honda_civic.pdf
    • https://cdn-cms.f-static.net/uploads/4369514/normal_6034644f9403e.pdf
    • http://netubekebusis.iblogger.org/54550453833.pdf
    • https://cdn-cms.f-static.net/uploads/4450158/normal_5feaeba0d543d.pdf
    • https://static.s123-cdn-static.com/uploads/4366964/normal_5fdd3e462296d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://656adf98-7a81-40bd-8d0f-2b9c27d09201.filesusr.com/ugd/268ab1_1fe1c15ee54e426fad53381fcba879d3.pdf?index=true
    • http://fasevebozumip.rf.gd/free_barbie_clothes_patterns.pdf
    • https://e4fb9bf1-a3d6-4767-9bf2-2a1021e5dc09.filesusr.com/ugd/53cfc7_21786e84148c4d89957472e73b808cf2.pdf?index=true
    • https://161abad2-7de2-49bb-9904-d6e2a620a662.filesusr.com/ugd/2eec94_166adfaeb05b4f598f4214903c78ef0a.pdf?index=true
    • https://uploads.strikinglycdn.com/files/54ea47ca-2487-4fc1-9952-5bc24ef6f5ff/nozitefisupibadiga.pdf
    • https://d3df31c7-72fe-42b1-a92e-0723e8ed7a16.filesusr.com/ugd/5bf82b_2a1ce1f52a574a308b7f91b7301fc234.pdf?index=true
    • https://2ddf8be6-044d-4f30-b6fd-16c032829cd6.filesusr.com/ugd/9827ea_5e62109bc9574b33ad3fa9ddad92ab08.pdf?index=true
    • http://gevewodex.epizy.com/autophagy_and_fasting.pdf
    • http://fobepufare.epizy.com/45183507018.pdf
    • https://uploads.strikinglycdn.com/files/e451daa7-bc32-494c-a944-d39ed3f8b36f/nordictrack_commercial_x22i_weight.pdf
    • http://rubujizuz.epizy.com/200_easy_homemade_cheese_recipes.pdf
    • https://uploads.strikinglycdn.com/files/89e9e00a-29bd-41c6-8535-45febafd09be/dekebulutujezegalewaxotu.pdf
    • http://vufagozujidivu.epizy.com/animorphs_tv_series.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_off0000ed05.bin
4eabcc4213876aa53cd07a007000b1b877a235bcd7b6356f6743c25432ddebe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED05 5504 bytes
font_01_sfnt_off0000ff96.bin
093aa7f028947928f11767b796a3ae9ec990625e32aec60741bb458a6dfd6c40		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF96 12800 bytes

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