Malicious PDF — malware analysis report

Static analysis result for SHA-256 7598a0590abf7e60…

MALICIOUS

PDF

77.9 KB Created: 2021-04-02 17:35:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 4ffad5e344c915c3c36b3486f1603b4d SHA-1: cfcfa9d049244340f479f48133cd8adb81202469 SHA-256: 7598a0590abf7e602b89b71a8a2012bdffdab262f9b29a099d3e252e281db210
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is highly indicative of a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were explicitly extracted, the presence of external URIs suggests an attempt to download a second-stage payload or redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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://dugedepap.ru/strik?utm_term=hampton+bay+ceiling+fan+parts+glass PDF link annotation
    • http://instasurprise.online/45032771539f2joz.pdfIn PDF document text
    • http://feyakast.online/fajikolezorivuhe7y3.pdfIn PDF document text
    • http://citrus-fruit.space/bejunumofadipekosamup3kbzj.pdfIn PDF document text
    • http://pubgmobiie.com/3d_drifting_games_unblockedjvthu.pdfIn PDF document text
    • http://falorilipeb.mywebcommunity.org/38377226238.pdfIn PDF document text
    • http://chestlune.online/why_do_i_have_the_worst_stomach_painsxrcdb.pdfIn PDF document text
    • http://masajsalonunuz.com/honeywell_radiator_heater_manualltrug.pdfIn PDF document text
    • http://woziwowariv.sportsontheweb.net/analytic_geometry_solved_problems.pdfIn PDF document text
    • http://parrrtner.xyz/ejercicios_de_lmites_al_infinito_resueltospkfy8.pdfIn PDF document text
    • http://lenuvivureropi.scienceontheweb.net/recipes_for_air_fryer_pork_ribs.pdfIn PDF document text
    • http://classkaod.ru/honda_eu2000_generator_service_manualfjtwz.pdfIn PDF document text
    • http://dom-bita.org/71233489560hgr2h.pdfIn PDF document text
    • http://pokemonrivals.online/singular_and_plural_form_of_criteriaucecr.pdfIn PDF document text
    • http://devlp.design/jozijipowojowobofi702cn.pdfIn PDF document text
    • http://gizigevom.mygamesonline.org/40377785932.pdfIn PDF document text
    • http://solent.bar/gavidetinaxilwecb.pdfIn PDF document text
    • http://adanakebap.org/93461517423l9v3y.pdfIn PDF document text
    • http://damita.fun/99517880102ptszg.pdfIn PDF document text
    • http://fastcreditreport.info/rawakeberawevuzuduzusd0gh6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dukavunivifa/tesuzifowasugoxemifosorik.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/rosomug.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/ingress_the_animation_parents_guide.pdfIn PDF document text
    • http://seroroxunabolu.onlinewebshop.net/40107324218.pdfIn PDF document text
    • https://s3.amazonaws.com/bejeseja/will_walmart_have_a_black_friday_sale_in_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/does_the_heater_use_a_lot_of_electricity.pdfIn PDF document text
    • https://s3.amazonaws.com/jubiferekaka/multivariate_analysis_of_variance_manova.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/45282003731.pdfIn PDF document text
    • https://s3.amazonaws.com/zisulamisozoto/84795651685.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/40026758807.pdfIn 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_off0000f269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF269 5536 bytes
SHA-256: ac5cc127e9e03d0aac9f32d8447052f35aa3b3bdf968199a907b3850a165a534
font_01_sfnt_off00010533.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10533 10492 bytes
SHA-256: 0717feeaf5730beea794196ca3708d85716ac4fec8728c861435d20dd94df6e1

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