Malicious PDF — malware analysis report

Static analysis result for SHA-256 0848c131c42a1f25…

MALICIOUS

PDF

76.2 KB Created: 2021-03-30 15:42:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 231e672e90af1eb6a7f85ff2114e3f65 SHA-1: 168b417d96a394a683aff1e14038fb593566df41 SHA-256: 0848c131c42a1f25f0b097ed12fbab20e851db3b57eadab956083bf0d2059926
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, indicating a phishing attempt. The embedded URL, 'https://soxebez.ru/aws?utm_term=the+great+american+songbook+internet+radio', is the primary indicator of malicious intent, likely leading to a phishing page or further malware download. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and a date, suggesting it was generated programmatically to appear as a legitimate document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://soxebez.ru/aws?utm_term=the+great+american+songbook+internet+radio
    • http://goladelexugezi.sportsontheweb.net/canon_canoscan_9000f_mark_ii_manual.pdf
    • https://derivasip.weebly.com/uploads/1/3/1/4/131407068/2501990.pdf
    • http://wivikaxebox.medianewsonline.com/gogotojudisodakum.pdf
    • http://cmbmarketing.agency/asm_metals_handbook_volume_2b86at.pdf
    • https://gemuvubakada.weebly.com/uploads/1/3/4/4/134494784/8379195.pdf
    • https://rotarivinevi.weebly.com/uploads/1/3/4/5/134599250/kololepofim-mupuvikogu.pdf
    • http://xakaderinetatu.mygamesonline.org/88720232537.pdf
    • http://pelinebaj.mypressonline.com/laser_doppler_anemometry.pdf
    • http://xufelaketodo.getenjoyment.net/vawobikotukapebotas.pdf
    • http://lomags.ru/fabfitfun_affiliate_login67hk3.pdf
    • http://nopezimugabotik.mygamesonline.org/problem_solving_activities_for_adults.pdf
    • https://fawirato.weebly.com/uploads/1/3/5/3/135392883/natevano.pdf
    • https://sekikeke.weebly.com/uploads/1/3/4/7/134739811/6759877.pdf
    • https://daradila.weebly.com/uploads/1/3/1/4/131438164/2f07f5c8e.pdf
    • http://contentmedialiteracy.com/bob_ewell_to_kill_a_mockingbirdzg1ks.pdf
    • http://capridigi.com/analysis_toolpak_mac_excel_2011ax7y7.pdf
    • http://bisibometixo.mywebcommunity.org/does_tricare_reserve_select_cover_pregnancy.pdf
    • https://fefumuvujudadi.weebly.com/uploads/1/3/1/6/131606087/xakigisi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nufidibodudulad/life_application_study_bible_niv_large_print_tyndale.pdf
    • https://s3.amazonaws.com/jolozidabi/cabrio_washer_will_not_power_on.pdf
    • https://s3.amazonaws.com/wewuxuviwar/33776393989.pdf
    • https://s3.amazonaws.com/filidabut/companies_accounting_standards_rules_2006.pdf
    • https://s3.amazonaws.com/pewibim/53119240332.pdf
    • http://gavawekib.myartsonline.com/63192455489.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_off0000ebce.bin
d7d198df600837b8f2c204abcc0b3c9d2fea2b6b8c66039b9b9ec29b44116b0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBCE 5476 bytes
font_01_sfnt_off0000fe3e.bin
d7a2a4cd1d38b67c0f32ca1278a881d771aa1c153eac15540e182237194ab844		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE3E 10848 bytes

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