Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5641b2e0db1bd0d…

MALICIOUS

PDF

80.8 KB Created: 2021-03-07 09:44:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8914829284c7dfb4e803bcfc3cb4a810 SHA-1: c20af655459267cc045bd82e70dbc1af1eeb12de SHA-256: c5641b2e0db1bd0d489c784806933cb04e73db6975c3001b174bdac2318b3df2
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 URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, appears to be a lure related to 'Jvc everio camcorder repair', suggesting a phishing attempt to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ponafet.ru/strik?utm_term=jvc+everio+camcorder+repair PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408706/normal_600f4de22947b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387590/normal_60391870df643.pdfIn PDF document text
    • http://carbags.site/slingshot_designs8yu9k.pdfIn PDF document text
    • https://cdn.sqhk.co/sugezigo/iibgejj/26675178102.pdfIn PDF document text
    • https://cdn.sqhk.co/kewesowovim/kgjdaIO/pottery_designs_pinterest.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459328/normal_5feb40e6295c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419218/normal_5fd1b9425721a.pdfIn PDF document text
    • http://jinevul.mygamesonline.org/blacks_law_dictionary_traveling.pdfIn PDF document text
    • http://ziximotizaned.medianewsonline.com/tanuzofabawojikuvifiw.pdfIn PDF document text
    • http://feyakast.online/physical_chemistry_mcquarriey0u7x.pdfIn PDF document text
    • https://cdn.sqhk.co/nufesewepi/eblCMHC/xadenagomezunajogaso.pdfIn PDF document text
    • http://penageli.getenjoyment.net/2021_lexus_es_350_lease_deals.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/paropabaru/ranunukekuxugo.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/video_maker_windows_8._1.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/game_brother_in_arms_apk_data.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/transformers_airachnid_fanfiction.pdfIn PDF document text
    • http://jewofeket.onlinewebshop.net/wofepofaverawuraz.pdfIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/wuwasasobogaxuwovoba.pdfIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/main_bhi_badhiya_song_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/44925961086.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F0 5056 bytes
SHA-256: f541bbc911fee61fd7a3f7ab639f0789dbc14eb6a28f82a4dd825c648d80acef
font_01_sfnt_off0000f913.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF913 10864 bytes
SHA-256: da5726f3d6f8910c0ee68c67cfa11cd2d51b6421befb7716fef793315e66ac1d
font_02_sfnt_off00011e96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E96 16752 bytes
SHA-256: e212a3aa34f99fec7cb487181bbd63b9499b73be822142e8234261a50f391335

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