Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fcb502367d9d513…

MALICIOUS

PDF

74.3 KB Created: 2021-03-28 08:56:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f333b234f51d59b6a4289b100487c07 SHA-1: 21ceaf4d7832ee3a4b0d1b65b79210ec542e14ec SHA-256: 8fcb502367d9d51339ecec8e021a0a86ee96975c97ad6455af1484cccf15c93c
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a phishing site impersonating financial news. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a malicious domain, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://resalured.ru/wix?keyword=bigcharts+marketwatch+com
    • https://furonutada.weebly.com/uploads/1/3/5/3/135347150/6388757.pdf
    • https://matatotasewitux.weebly.com/uploads/1/3/1/3/131384286/8955582.pdf
    • https://cdn-cms.f-static.net/uploads/4486051/normal_6039bc99bf759.pdf
    • https://cdn-cms.f-static.net/uploads/4373259/normal_5fe633c8eb521.pdf
    • http://kodutizaga.mywebcommunity.org/cause_and_effect_of_water_pollution.pdf
    • http://kawojoxakinit.22web.org/51016728872.pdf
    • https://static.s123-cdn-static.com/uploads/4387698/normal_5ffa36164056c.pdf
    • http://rukafuxofi.iblogger.org/79406414745.pdf
    • https://static.s123-cdn-static.com/uploads/4421199/normal_5ff9eb27c03b2.pdf
    • http://tuvurebomiworo.scienceontheweb.net/zenususineroxemezur.pdf
    • https://cdn-cms.f-static.net/uploads/4492900/normal_60294463b6d30.pdf
    • https://cdn-cms.f-static.net/uploads/4387406/normal_5fd3beec89b8f.pdf
    • http://zibepifutidi.sportsontheweb.net/gawawipobalulo.pdf
    • http://fejaledumutopuj.iblogger.org/marriage_biodata_word_format_free_download.pdf
    • http://dabinepoj.mygamesonline.org/arborescence_linux.pdf
    • https://static.s123-cdn-static.com/uploads/4382953/normal_5ffaf04c5db1e.pdf
    • https://razebefalokugex.weebly.com/uploads/1/3/4/8/134895215/nofuja.pdf
    • https://xadigepuve.weebly.com/uploads/1/3/1/4/131454317/xatofimuvav_dalidagus.pdf
    • http://fontawesome.iohttp://fontawesome.io/license/
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sutexuvidag.myartsonline.com/is_eso_worth_it_2020.pdf
    • http://kuxemozoxabonag.onlinewebshop.net/7415890644.pdf
    • http://jelugubafegoj.rf.gd/yamaha_r6_service_manual_2006.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db68.bin
9fba9b0d9e2cc48f58c52755440c9a9bb3bd4c5dbe3d8c853d7e81cca7fbdf20		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB68 1872 bytes
font_01_sfnt_off0000e45d.bin
57f998f7aa8084a04927538af7bd13018b0007dec180438e73917629736ad2d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE45D 5384 bytes
font_02_sfnt_off0000f69a.bin
346fb1d29e965e21967a5865d2faa777d524fde62c2121c87e07aa53f2dc417c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF69A 10728 bytes

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