Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dbc44d5548f75d0…

MALICIOUS

PDF

89.7 KB Created: 2021-05-04 09:59:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f633452e70b5dd914097732ce4d5d11 SHA-1: 2732df97e34fd36851572ce2609e8148df541629 SHA-256: 5dbc44d5548f75d03aa46829fc0ce72151ef20eb8ee44a4f888d1edb0313d81c
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 malicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to 'Rosencrantz and Guildenstern are Dead' and the wkhtmltopdf tool, suggesting a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://kuzutuzo.ru/strik?utm_term=rosencrantz+and+guildenstern+are+dead+play
    • https://static.s123-cdn-static.com/uploads/4378855/normal_5ff6b46c67398.pdf
    • https://ganegekisawaji.weebly.com/uploads/1/3/1/4/131406809/sepukusiloduw-rujuzaj-suruxa-jafeturivonab.pdf
    • http://kerosijuvibeg.scienceontheweb.net/doterra_essential_oil_uses.pdf
    • https://cdn-cms.f-static.net/uploads/4409409/normal_6017959d42117.pdf
    • http://xojavuwolow.22web.org/assertiveness_vs_aggressiveness.pdf
    • http://bidimiw.sportsontheweb.net/vamebezeg.pdf
    • https://cdn-cms.f-static.net/uploads/4500200/normal_5fd638a1b72b2.pdf
    • http://narovomesizi.medianewsonline.com/calories_in_dunkin_donuts_large_coffee_with_cream_and_sugar.pdf
    • http://pazefezos.mywebcommunity.org/24192154175.pdf
    • http://levotavo.scienceontheweb.net/47447250761.pdf
    • https://cdn-cms.f-static.net/uploads/4375358/normal_603c3003ac2c3.pdf
    • http://rinujajija.getenjoyment.net/luwevolofobubuna.pdf
    • https://winilogixibofop.weebly.com/uploads/1/3/1/4/131408061/1015114.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/f99aa25f-8b82-4333-b0a2-992f3504c551/konakuwajojexigejoruzibaj.pdf
    • https://uploads.strikinglycdn.com/files/3e22d246-f965-4b91-995b-d0c011ee511b/popawapolodu.pdf
    • http://mabezaze.epizy.com/gumetetibikozonijalu.pdf
    • http://xowobovu.myartsonline.com/explain_how_to_use_the_standard_normal_table_to_find_the_probability.pdf
    • https://uploads.strikinglycdn.com/files/aad3e235-3557-45f3-803b-b5d7b94127fa/90313058300.pdf
    • http://gofuvosopo.epizy.com/95297501687.pdf
    • http://fizarurepolap.epizy.com/clasificacion_de_bethesda_2020.pdf
    • http://jisunopesaluzi.atwebpages.com/gidago.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_off000111df.bin
f656a98bba13eb34a5db0096d287e54cb7c577cdce9093569adf14047e81effb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111DF 5280 bytes
font_01_sfnt_off000123e9.bin
be235b993791eff6d6879606ffc5a77aa478b543561127a2c0ee2debe39a7daf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x123E9 11660 bytes
font_02_sfnt_off00014b29.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14B29 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.