Malicious PDF — malware analysis report

Static analysis result for SHA-256 030c67dfb6abd039…

MALICIOUS

PDF

85.0 KB Created: 2021-03-16 09:34:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 372c6f7f2efccd703d22b50c8864ee5b SHA-1: af7b46bf8c6f0023eeeff6dae56e95286fbfe82a SHA-256: 030c67dfb6abd03911104c226fc200bc4848b69719bba5b3f7dfbf492f3c04d8
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File T1059.007 JavaScript

The file is identified as malicious by ML classifiers and ClamAV, with heuristics indicating it's a PDF containing external URIs and social engineering tactics. The 'SE_CLICKFIX' heuristic suggests the document attempts to trick the user into executing a command, likely to download and run a secondary payload. The embedded URL 'https://ponafet.ru/strik?utm_term=how+to+identify+motherboard' is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://ponafet.ru/strik?utm_term=how+to+identify+motherboard
    • https://rotarivinevi.weebly.com/uploads/1/3/4/5/134599250/5720540.pdf
    • https://xizikako.weebly.com/uploads/1/3/0/9/130969027/1390052.pdf
    • https://nozezezolakufu.weebly.com/uploads/1/3/2/6/132695232/dosexuburazujuxoxow.pdf
    • https://funoridarudaru.weebly.com/uploads/1/3/5/3/135304061/nevibulefowol.pdf
    • http://ganedoxumizaj.sportsontheweb.net/bukhari_muslim_urdu.pdf
    • https://paxolobiwoke.weebly.com/uploads/1/3/1/1/131163878/jilelefekosu.pdf
    • https://toruganaduloxo.weebly.com/uploads/1/3/5/3/135347606/27a8c838242.pdf
    • https://midodelawipage.weebly.com/uploads/1/3/4/5/134585137/7832401.pdf
    • http://vukefof.22web.org/business_process_management_ebook_free_download.pdf
    • https://gusumumonabol.weebly.com/uploads/1/3/0/7/130775475/39199ab70e86.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/nunakixuma/color_worksheets_for_kinder.pdf
    • https://s3.amazonaws.com/muvevanepen/15607972358.pdf
    • http://besipopi.epizy.com/serilog_log_error_template.pdf
    • http://gozidonozali.myartsonline.com/sabumogotizamuwep.pdf
    • https://s3.amazonaws.com/tipikaxe/bose_sounddock_series_ii_how_to_turn_on.pdf
    • http://sunusegelu.rf.gd/lost_boy_piano_sheet_easy.pdf
    • https://s3.amazonaws.com/numegubowalonan/mozumewofokuwojibe.pdf
    • http://nesazovopiw.rf.gd/how_to_make_book_from_scan.pdf
    • https://s3.amazonaws.com/pegebunov/xexusakerotebinajolaxa.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6d4.bin
534fb1814fb1229053e0e6fb6cf65adddde3d3049953ec650b42700ba768f228		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D4 5020 bytes
font_01_sfnt_off000107b8.bin
51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107B8 1800 bytes
font_02_sfnt_off00011046.bin
90d815b6c23c6bf7e142e088d7fe14be6176901745695f6d47e48b3f9016fca8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11046 11292 bytes
font_03_sfnt_off000136dd.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x136DD 4324 bytes

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