Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c2d480969002313…

MALICIOUS

PDF

80.8 KB Created: 2021-03-02 19:56:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: e00fa4060197195f0703a9efcff52205 SHA-1: f1b1fc6a6163d280f60351629f16eb413409271d SHA-256: 8c2d4809690023133671282417098ae5b15503c76530ee9d6aa6392685376e1a
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that points to a URL designed to appear as a search result for a specific manual. This is a common social engineering tactic to trick users into clicking malicious links. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence score suggest malicious intent, likely to deliver a secondary payload or phish for information.

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://dugedepap.ru/award?keyword=yamaha+rx+v673+manual PDF link annotation
    • http://vobefoli.iblogger.org/happier_ed_sheeran_piano_sheet_music_free.pdfIn PDF document text
    • http://sekasululaba.iblogger.org/pisokizizow.pdfIn PDF document text
    • http://sisedema.22web.org/vunegivekolizinogore.pdfIn PDF document text
    • http://vukosodo.iblogger.org/ejercicio_92_pagina_151_algebra_de_baldor.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jolozidabi/xozawisolasib.pdfIn PDF document text
    • http://safijojakas.epizy.com/bk_precision_390a_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/xewobenesafunagopo.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/77068189853.pdfIn PDF document text
    • http://noporotosodapo.epizy.com/bosque_humedo_tropical_colombia.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/80161477623.pdfIn PDF document text
    • http://xogonat.epizy.com/letter_from_birmingham_jail_written_in_response_to.pdfIn PDF document text
    • http://gulogomolu.rf.gd/how_to_learn_egyptian_language.pdfIn PDF document text
    • http://godavuvexo.epizy.com/jajujukeviraxomitilozu.pdfIn PDF document text
    • https://s3.amazonaws.com/tumuzu/official_announcement_letter_template.pdfIn PDF document text
    • http://zisifotixevul.rf.gd/xufezuzutibobo.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/guxixu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB6D 5236 bytes
SHA-256: f63ffbe0303c069cfdfc2444508073e396f385763d2988af1c429c7e2a914477
font_01_sfnt_off0000fd23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD23 10384 bytes
SHA-256: efe8a284a7dd91c83adba6a1d9b079853e3b849120dd5bc0b4790fb6036b141e
font_02_sfnt_off000120e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120E2 16068 bytes
SHA-256: e7273338525a866f49bd556f13a0e46ce1e8513f85f175d9d987aa1f8b89adb9

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