Malicious PDF — malware analysis report

Static analysis result for SHA-256 7354d96dab42ba69…

MALICIOUS

PDF

78.7 KB Created: 2021-04-04 09:28:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54d5bf4d7ac86367444dbf4495213b1b SHA-1: 9716e57ba1ba432426387b7f16b77dd91d1d5bfe SHA-256: 7354d96dab42ba69bfc46c9b41d33cd8131243835ddcae55e2561d368f938a1b
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple detection engines, including a machine learning classifier and ClamAV, indicating malicious intent. It contains an embedded URI pointing to 'vilenefex.ru', which is likely used to deliver a secondary payload or conduct phishing. The document body appears to be obfuscated or corrupted, but the presence of external URIs and the high detection scores strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://vilenefex.ru/strik?utm_term=b+tech+information+technology+salary+in+india
    • https://cdn.sqhk.co/wabajevebe/jcgdhfO/the_walking_dead_a_new_frontier_walkthrough_ign.pdf
    • http://vzruvayarttraff.xyz/dinghy_boat_for_sale_philippinesxq1y9.pdf
    • https://cdn.sqhk.co/tosijoxopum/jeFjdjc/339_chessington_dr_odenton_md_21113.pdf
    • https://cdn.sqhk.co/mexovaru/hbDJz5Q/space_images_free.pdf
    • http://strapslap.online/2160580467sy8r2.pdf
    • https://cdn.sqhk.co/kuvapipitol/RPotnaf/83924177479.pdf
    • http://claire-irk.ru/medialink_router_password_changep71q3.pdf
    • https://cdn.sqhk.co/liwijodi/oeT3w77/44456342187.pdf
    • http://znakomstva18x.site/tixatoxakumeit85b.pdf
    • http://itwow.info/livre_nergie_renouvelablex0u10.pdf
    • https://cdn.sqhk.co/zobunifi/dhdWBha/84206740797.pdf
    • http://creditscorerepair.info/660933495690w7nb.pdf
    • https://cdn.sqhk.co/mowaxuso/eie9yih/android_10_oneplus_7_pro_t_mobile.pdf
    • https://cdn.sqhk.co/fibafape/ejevZSo/30._4_excretory_system_worksheet_answers.pdf
    • https://cdn.sqhk.co/jijatidos/jdSN1jh/seeing_a_red_sunset_meaning.pdf
    • https://cdn.sqhk.co/manoxixo/ghhhhhi/cuckoo_sandbox_physical_machine.pdf
    • https://cdn.sqhk.co/nivabetaz/jcRhemi/movusinug.pdf
    • http://sollabs.xyz/can_you_eat_anything_for_breakfastq621l.pdf
    • http://form-lnstagramverifiedbadges.com/213546551204tlvo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://maligufaribez.epizy.com/firepower_2130_asa_datasheet.pdf
    • http://boledopevo.epizy.com/pocket_dictionary_of_synonyms_antonyms_and_homonyms.pdf
    • http://toramowajo.epizy.com/what_questions_are_asked_in_a_private_school_interview.pdf
    • http://vevaxadebelag.epizy.com/mugalubanakijexo.pdf
    • http://rusozetowozo.epizy.com/vutetux.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_off0000f5df.bin
1495ff01135bda1bb2c9c8fc16de653a2d058fd497202491eeb253cdcfee6608		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5DF 5584 bytes
font_01_sfnt_off000108b7.bin
c210c3e1bd13b0b053f49f5ea49a4addc4f0b1aab806bc60de0042abc91e4433		 pdf-font-stream PDF embedded font (sfnt) at offset 0x108B7 10676 bytes

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