Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce76e626f87df141…

MALICIOUS

PDF

95.6 KB Created: 2021-04-01 00:08:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: ae12ba3cca8a7bb49745e5b10f33bb34 SHA-1: 7e3e0e7a96fe0b7540593753d4cdcee47b1fd35c SHA-256: ce76e626f87df141725a12c2007ae277ca71970b40778b7c56ff2cb23a95d508
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, as indicated by the 'PDF_URI' heuristic and the 'ML_NYX_PDF_MALICIOUS' flag. The ClamAV detection further confirms its malicious nature, identifying it as a phishing trojan. The document body, though heavily obfuscated, contains keywords related to the embedded URL, suggesting a social engineering attempt to trick the user into clicking the link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://zajinet.ru/award?keyword=alkaline+igneous+rocks+pdf PDF link annotation
    • http://fejekadiwoxobiz.getenjoyment.net/51622579357.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479213/normal_60636d0840252.pdfIn PDF document text
    • http://wabiferofuvud.mygamesonline.org/acid_rain_seminar_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373985/normal_602498111210f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486550/normal_604e6b75754f1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389376/normal_5ffeb31082c0d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409826/normal_6063d38b9be37.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454807/normal_5fe2369293e64.pdfIn PDF document text
    • http://tijudozi.scienceontheweb.net/kotogude.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481409/normal_5ffacc160f54b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/pulavokaxe/gofowabu.pdfIn PDF document text
    • http://tasefabomodewiv.epizy.com/73057958413.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/project_management_certification_courses_near_me.pdfIn PDF document text
    • https://883cd1dc-02d0-4059-8fa2-99201f92b631.filesusr.com/ugd/6166c9_5d3a717c3ed449d38bca3dc1efae684f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lumixi/auditoria_de_seguridad_de_sistema_de_informacion.pdfIn PDF document text
    • http://xepuzakudera.atwebpages.com/zesonulivasukorezosexo.pdfIn PDF document text
    • http://wegefidipa.epizy.com/limadedatumawubuzi.pdfIn PDF document text
    • http://nanizezuzodujo.epizy.com/dixie_chopper_xcaliber_4x4_price.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/business_level_strategy.pdfIn PDF document text
    • https://0ed30ddb-3df1-4505-9e4e-3e87fc6d20ea.filesusr.com/ugd/f043c1_a3a92d301f7f4f7d9363f3bfc9f1faf1.pdf?index=trueIn PDF document text
    • https://37e79482-e567-4eff-b449-6ea9b90d4679.filesusr.com/ugd/cff0cd_7a77d925c5244ed196393f67fa366131.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/whatsapp_de_colores_apk_2019.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000116ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116ED 5180 bytes
SHA-256: 7499830aa019c7e766f78d86389b67c3a5d27f7a47b9deaf8025735da98325fd
font_01_sfnt_off0001288e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1288E 11096 bytes
SHA-256: 647beba15a410da3076d61dfb3193a6616733901b2e45525f59c20f2e48669cd
font_02_sfnt_off00014dda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14DDA 16060 bytes
SHA-256: d1a84ba8f0e4a827a048d387db8dd5dae3538f1c7e72415b16af587a9947cdc7
font_03_sfnt_off00016272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16272 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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