Malicious PDF — malware analysis report

Static analysis result for SHA-256 f74004e80e161c9b…

MALICIOUS

PDF

80.6 KB Created: 2021-03-06 07:10:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87240962a6cc72b1052c115b049a81db SHA-1: 900c7c8adaf36e23a54365cb604bafc28f85e31b SHA-256: f74004e80e161c9bb86c20531ed1b286cbd366d10e444788a1f2c1f8dd5bccc5
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Les Miserables'.

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://vilenefex.ru/123?utm_term=les+miserables+2019+summary
    • https://cdn-cms.f-static.net/uploads/4491159/normal_5fd672458c3df.pdf
    • https://jakugogafezokev.weebly.com/uploads/1/3/1/4/131437362/5558879.pdf
    • http://rubewox.sportsontheweb.net/days_with_frog_and_toad_activities.pdf
    • http://sopisafexuj.sportsontheweb.net/what_is_macroeconomics_explain_its_importance_and_limitations.pdf
    • https://static.s123-cdn-static.com/uploads/4489601/normal_5feea02301363.pdf
    • https://cdn-cms.f-static.net/uploads/4407724/normal_6015ca5799238.pdf
    • https://cdn-cms.f-static.net/uploads/4381082/normal_601fda55a8155.pdf
    • http://nokojatagi.mywebcommunity.org/logawosisukixixi.pdf
    • https://static.s123-cdn-static.com/uploads/4375696/normal_5fc84527efcd9.pdf
    • https://cdn.sqhk.co/tosobulig/Qhd7tEt/picot_question_examples_nursing.pdf
    • http://mevukavotidu.getenjoyment.net/shoprider_scooter_replacement_parts.pdf
    • https://xoboxevoz.weebly.com/uploads/1/3/2/7/132740619/228edcd20307928.pdf
    • http://zukixulen.mypressonline.com/4839537458.pdf
    • http://girepodemaz.getenjoyment.net/zikudofiloxejixumekodirej.pdf
    • http://juvizex.sportsontheweb.net/the_other_side_of_the_mountain_book.pdf
    • https://cdn.sqhk.co/jirudumom/ghihPjj/dipozisusole.pdf
    • https://wixumiwob.weebly.com/uploads/1/3/0/7/130776296/4044434.pdf
    • https://cdn.sqhk.co/petawelesup/hsNgdV1/kuwomevasike.pdf
    • https://japosazononugad.weebly.com/uploads/1/3/4/5/134583509/95aa67d88ef.pdf
    • https://verikadofaja.weebly.com/uploads/1/3/2/3/132303102/pakiwesupe_rajow_xugadeguwowom.pdf
    • http://xozowilozoga.mywebcommunity.org/navy_advancement_results_fall_2020_selres.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bowegasobufur.myartsonline.com/cisco_linksys_e2500_change_password.pdf
    • https://41d9b059-0b17-466b-96e6-f31a3f3e9b19.filesusr.com/ugd/f1ead9_5beee445c9ab40aeb2a1766d3d614879.pdf?index=true
    • https://329f26c8-0235-4118-8622-173d264d9cf1.filesusr.com/ugd/221f3a_84f3f6457a5642e5a5a92b0c57ee1534.pdf?index=true
    • http://pulutugorivexek.atwebpages.com/un_centimetro_cuantos_ml_tiene.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_off0000fa2a.bin
60b381a245279c3fd13dda4b78e7f888e86230f551adf51d6305b35dec4922f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA2A 5496 bytes
font_01_sfnt_off00010cc4.bin
28d65e8cbc75a6d54a30f3b450840171139352b313e8bf4e62bcfe89889c35f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10CC4 11768 bytes

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