Malicious PDF — malware analysis report

Static analysis result for SHA-256 9016765d28ef4405…

MALICIOUS

PDF

67.5 KB Created: 2021-02-21 17:51:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 724f3b784d4fb4b5dff09d1c7cc96673 SHA-1: 5eeda21e7c3b78b226dadbfebd136dd31fda664c SHA-256: 9016765d28ef440562e9a5a167c65c70308795a7201f8eaece3cc33aab79a6c1
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains multiple embedded URLs, one of which is directly linked to a phishing-related query. The PDF structure and embedded content suggest it's designed to trick users into visiting a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/strik?utm_term=how+much+does+a+functional+movement+screen+cost PDF link annotation
    • https://cdn.sqhk.co/pivugituxi/Jgfgcij/bapuzud.pdfIn PDF document text
    • https://cdn.sqhk.co/potasuregoz/OigGyx9/pet_shelters_near_me_hamster.pdfIn PDF document text
    • https://cdn.sqhk.co/bozutebux/ijhHb0I/banco_bradesco_sa_stock_dividend.pdfIn PDF document text
    • https://cdn.sqhk.co/pevizopubok/sHvYghD/titan_lithium_ion_battery_airsoft.pdfIn PDF document text
    • https://cdn.sqhk.co/sewizefaxiki/eggBhia/fiseluvadiri.pdfIn PDF document text
    • https://cdn.sqhk.co/mikevoponage/Mhbksjh/budoguligadisozupegozi.pdfIn PDF document text
    • https://cdn.sqhk.co/mekaxosur/fihojft/melodyne_download_full.pdfIn PDF document text
    • https://cdn.sqhk.co/xamozafi/cICuxor/fish_tanks_near_me_for_sale.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484631/normal_600c6508ef0f1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485589/normal_5ffe8982adf17.pdfIn PDF document text
    • https://cdn.sqhk.co/rekutadis/jiSMibK/35474718158.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4529095/normal_5fccfe7ec6699.pdfIn PDF document text
    • https://cdn.sqhk.co/xexisini/nMbZ4ic/vekexovewumuvepekef.pdfIn PDF document text
    • https://cdn.sqhk.co/vagewovupug/OWNwLgh/space_station_pinball_mods.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000cc22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC22 5372 bytes
SHA-256: 0127e7b138c4549325b4cf980070fe24fd2cd9c5e09f65730e8e65209382b80d
font_01_sfnt_off0000de59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE59 10112 bytes
SHA-256: 0dc2bdf9cf89340b2bc0ff55914e2e7772b6e6c9584f1ea89ff2c3dc0d07e0b1