Malicious PDF — malware analysis report

Static analysis result for SHA-256 692bb9ad68e1aaf9…

MALICIOUS

PDF

175.8 KB Created: 2021-03-23 07:26:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68614359d6396b75f104c338424e8643 SHA-1: 976acf874f2146be61e31622a5e045597506a46d SHA-256: 692bb9ad68e1aaf9f8c6a21a73fdb5d841449a906523b1012a2c305f75032810
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, disguised as a link to an online book. This is a common lure for phishing attacks or to redirect users to download malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://botokaw.ru/strik?utm_term=the+narrative+of+the+life+of+frederick+douglass+online+book
    • https://xepebujusu.weebly.com/uploads/1/3/4/3/134319702/donozuvunogeg.pdf
    • http://xadazobisisim.scienceontheweb.net/astronomy_magazine_february_2020.pdf
    • http://dodajavux.scienceontheweb.net/forgotten_realms_campaign_guide_3.5.pdf
    • http://mibotirekusiw.mywebcommunity.org/norobifopuxudogor.pdf
    • https://dolilufaxeni.weebly.com/uploads/1/3/2/6/132683246/3530678.pdf
    • https://faxefijuw.weebly.com/uploads/1/3/1/8/131872096/wugubisefa.pdf
    • http://tupujetu.sportsontheweb.net/rapidex_english_speaking_course_book_in_marathi_download.pdf
    • https://ramokazadi.weebly.com/uploads/1/3/4/4/134470245/8793fe.pdf
    • http://xagelofitu.22web.org/tiduw.pdf
    • https://rokotejipap.weebly.com/uploads/1/3/0/8/130814190/fezag_situpipurivi_madomobemu_rixijurexidarej.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://mawokale.myartsonline.com/16983329494.pdf
    • http://lisotabisalak.epizy.com/best_rated_deck_stain_consumer_reports.pdf
    • http://suzufesa.epizy.com/dell_latitude_e6410_core_i5_review.pdf
    • http://sotemapepuko.epizy.com/vikonovuroj.pdf
    • https://0ecef3a8-5193-4df1-8dcb-1b7dd0f2be2a.filesusr.com/ugd/e6092c_5ecd71bd4c614954872d939faa27cf5b.pdf?index=true
    • https://ee897e78-a157-4eb5-8a47-d615096087a2.filesusr.com/ugd/113e89_c8466b6829e14ac78bb34d6615f487d7.pdf?index=true
    • http://nofifejagarenut.epizy.com/causes_of_antepartum_hemorrhage.pdf
    • http://kirogebi.epizy.com/liposi.pdf
    • http://nibopinalilabaj.onlinewebshop.net/subofugivuguji.pdf
    • http://xinasewaja.epizy.com/34711636658.pdf
    • https://3f46bf15-0a8c-4e80-b3e5-a2e3bf90e008.filesusr.com/ugd/8e6e76_c2a3c4926f494326b23a0311e5ddd9e1.pdf?index=true
    • http://xogejutir.rf.gd/14953520144.pdf
    • https://dba0ca6b-c979-46b3-87c9-041648dee063.filesusr.com/ugd/6f58fb_3044048948b849809dfc53e42f3607fa.pdf?index=true
    • https://a2ae8793-a99f-480d-a3bc-849ef63d34f7.filesusr.com/ugd/cc207a_67fcfa0c5c124a0aa1e6b968041af1d2.pdf?index=true
    • http://bitenozof.atwebpages.com/modanadove.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_off000276d3.bin
f979e5c8504d0daee49a7b3fa6a14ce25dd2e87bf77a055671767893bfe96d0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x276D3 5496 bytes
font_01_sfnt_off00028984.bin
c1275236b0e096062af9e3b7507fb8c2b1085f97c6481409fd253d52076ec2e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28984 10828 bytes

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