Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb4041732d017c7e…

MALICIOUS

PDF

89.4 KB Created: 2021-03-20 13:47:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04f4ffef45e69cf71ebb2a46d3e6d955 SHA-1: b7a747141637be3e4e21e45c2e475a385a765878 SHA-256: fb4041732d017c7e7d80f1c3d5deebaeff5c07bc684db3ec658acc378e56bc9e
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that leads to a phishing page. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or credential harvesting. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, potentially exploiting PDF vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://dafemum.ru/strik?utm_term=blades+for+old+black+and+decker+jigsaw
    • http://cmbclientes.com/material_science_by_sp_seth_free_downloadb9znd.pdf
    • http://xejitifuwoligaf.mypressonline.com/sansui_led_tv_32_inch_specifications.pdf
    • https://cdn-cms.f-static.net/uploads/4383800/normal_600f1b3c0575e.pdf
    • http://shopyou.online/2018_ford_mustang_gt_premium_pricej00k0.pdf
    • http://jushq.pro/que_significa_taller_en_ingles_a_espaol36vr2.pdf
    • http://lbaranaydin.com/4278546694v4mu0.pdf
    • https://fekugutupufug.weebly.com/uploads/1/3/4/8/134876907/tudux.pdf
    • http://winoorama.website/475675600109nunk.pdf
    • http://mufadetajamojo.iblogger.org/framework_3._5_for_windows_8._1.pdf
    • http://nakekizedexu.getenjoyment.net/sebugimatuzefekafemit.pdf
    • https://static.s123-cdn-static.com/uploads/4481819/normal_600804d7dea06.pdf
    • http://instup.xyz/dell_latitude_e6430_bluetooth_driver_windows_80q1w1.pdf
    • https://domirirezup.weebly.com/uploads/1/3/5/3/135382932/7a22d29cb5.pdf
    • http://simopuvoramawu.mywebcommunity.org/is_anker_a_good_brand_reddit.pdf
    • http://italiahot.space/revarepojukoguszj4p3.pdf
    • http://osummer.space/87018149104h5r0i.pdf
    • http://ryduslim.website/pipusunuxatejutukokogjonq.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://duwemanuwixam.atwebpages.com/56831374919.pdf
    • http://xibiwoziveva.epizy.com/zozubonaxirebuze.pdf
    • http://seninode.epizy.com/cascada_de_coagulacion_actualizada.pdf
    • http://wawutanow.epizy.com/liturilino.pdf
    • http://fazovalekotevo.onlinewebshop.net/bolewegar.pdf
    • http://midotujeg.rf.gd/amnagement_du_territoire_ivoirien.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_off00011c26.bin
fb2c6568895061b345b38c8b2d0a68e224dd567e0da35da25e53e89b6acf94f1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11C26 5612 bytes
font_01_sfnt_off00012f68.bin
f78734d8340738d1cfd3262a5c59bfc8fb5cbbb94b4394d012a2a4f361737f5d
pdf-font-stream PDF embedded font (sfnt) at offset 0x12F68 11596 bytes