Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4691c3d1d43e2bc…

MALICIOUS

PDF

77.3 KB Created: 2021-03-02 04:31:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 12bc6bb1b1e14d66a272e079b315795e SHA-1: 84363c86a0b7ef1fef925537bb1c8c88075819cf SHA-256: d4691c3d1d43e2bc68bacb8d7df527dd4cf8f54fd8904a35b5b720284e154282
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that masquerades as a game guide, likely to trick users into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution attempt.

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://gimoguvi.ru/wix?keyword=idle+heroes+artifacts+guide PDF link annotation
    • https://cdn.sqhk.co/xisiwuba/ggONS0i/serakadenonupinu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444098/normal_5fe4dc4b56594.pdfIn PDF document text
    • https://cdn.sqhk.co/wotedimozer/idhiajh/79357790660.pdfIn PDF document text
    • https://cdn.sqhk.co/fapewakuw/bTUhjEX/flying_bird_tattoo_meaning.pdfIn PDF document text
    • http://pilevisuzo.iblogger.org/53051373502.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374203/normal_6002853b7511b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493541/normal_5fd150eebd46d.pdfIn PDF document text
    • http://ladukusuga.22web.org/devexpress_aspxgridview_edit_form_template_validation.pdfIn PDF document text
    • https://cdn.sqhk.co/tiruxugajo/GjjtVXk/lajumelikumopilekek.pdfIn PDF document text
    • https://cdn.sqhk.co/rolileduvof/gershjK/her_story_game_cast.pdfIn PDF document text
    • https://cdn.sqhk.co/benibavagoge/gggiujb/rpg_crystareino_walkthrough.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422628/normal_5fec2ec53ffd2.pdfIn PDF document text
    • https://cdn.sqhk.co/jugomuzuteb/iazhh6Y/neha_kakkar_2020_new_song_mp3_download_free.pdfIn PDF document text
    • https://cdn.sqhk.co/sogefuluf/hjWVU3X/lomifu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://momoxorepuvo.epizy.com/sample_general_information_sheet_for_cooperative.pdfIn PDF document text
    • http://kewatolod.rf.gd/fuwifapotozadiponowo.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f36e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF36E 5220 bytes
SHA-256: d4d6f00cce87b62aaff908ffda79e9eb5198445b979c93e5789d901910761ade
font_01_sfnt_off00010525.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10525 10188 bytes
SHA-256: 15f936afe7ab33a9ab7ed5bb03129873617d8d9debefd131725f6368fd6585f3

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