Malicious PDF — malware analysis report

Static analysis result for SHA-256 616c485d93e48700…

MALICIOUS

PDF

107.0 KB Created: 2021-03-24 19:17:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa959dbfc98c52bcd814dc2093e7665a SHA-1: 0f76a59f896c42ac8a73b0e5d48ec39dd68f4a7e SHA-256: 616c485d93e4870082567a4b36461dafb65f2f31907da9a99e9928a3c88fe167
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious content. An embedded URI points to a suspicious domain, vilenefex.ru, which is likely used to host a phishing page or distribute further malware. The document body contains garbled text, suggesting it is not intended for legitimate user consumption but rather to obscure malicious elements.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://vilenefex.ru/strik?utm_term=what+do+we+mean+by+knowledge+economy
    • http://davupopebuwiser.sportsontheweb.net/sports_and_hobbies_vocabulary_exercises.pdf
    • https://cdn.sqhk.co/lopijikuvi/dBjgYSR/1082393764.pdf
    • http://garobunatuxovi.scienceontheweb.net/nawesojowukogufajanim.pdf
    • https://cdn.sqhk.co/ximepadogi/ghSgcib/first_grade_math_activities_online_free.pdf
    • http://blacktea.space/bully_pc_game_trainer_free76dfm.pdf
    • http://immortal-sho.club/divovafisevetujenikese64gca.pdf
    • http://cheapkeys.site/how_do_i_reset_my_swann_wifi_cameraext4w.pdf
    • http://sivolejujivozul.scienceontheweb.net/beyond_good_and_evil_nietzsche_free.pdf
    • https://cdn.sqhk.co/tizesefetus/cojeigS/tor_onion_browser_for_android.pdf
    • https://cdn-cms.f-static.net/uploads/4498997/normal_601d23b52da03.pdf
    • http://bt-management.website/58722945550szyjc.pdf
    • https://cdn.sqhk.co/biloriput/N5hgPgi/make_your_own_solar_system_online_game.pdf
    • https://cdn-cms.f-static.net/uploads/4407997/normal_603e80f3ac8f1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/vuzufexarevima/cashew_nut_processing_unit_project_report.pdf
    • https://s3.amazonaws.com/pibabopuduj/doduwisezakilolilepafosul.pdf
    • https://s3.amazonaws.com/vanatul/boss_me_80_user_manual.pdf
    • https://s3.amazonaws.com/petikamov/bourns_trimpot_3296_datasheet.pdf
    • https://s3.amazonaws.com/xaliwalufoguni/good_will_hunting_script.pdf
    • https://s3.amazonaws.com/zikeko/double_bed_sheets_egyptian_cotton.pdf
    • http://jafixomedimun.onlinewebshop.net/ikea_brimnes_white_queen_bed_frame.pdf
    • http://dasobiviwadodaj.atwebpages.com/roxajewuwokegunip.pdf
    • https://s3.amazonaws.com/vipuxafol/futuginemasa.pdf
    • https://s3.amazonaws.com/xeropizuwe/lofizinosejob.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_off0001614c.bin
5da2f6c8e27fc8b8e7fa17aedeba918f1f03bd2e90ecea150b2efe605bf0f41f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1614C 5488 bytes
font_01_sfnt_off000173f6.bin
4b708379dccc47f779c90c058cbc40d382297acbeabea9f8ef97631575ed6993		 pdf-font-stream PDF embedded font (sfnt) at offset 0x173F6 13240 bytes

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