Malicious PDF — malware analysis report

Static analysis result for SHA-256 79ad9babc8583be5…

MALICIOUS

PDF

79.1 KB Created: 2021-04-10 07:16:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d543b81b49d7b7061e3f2caf04e43161 SHA-1: 7b1b5b1c14cf5e5a2b8bdb569730a616c24de805 SHA-256: 79ad9babc8583be508955e2d8df4357aaf83e84e8193d50c08db486fb6506127
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a suspicious domain, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body's content is obfuscated but appears to be a lure related to audio equipment, aiming to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://dugedepap.ru/strik?utm_term=turtle+beach+stealth+500x+no+game+sound
    • https://cdn.sqhk.co/mozoposowi/sieLheQ/waze_app_not_working_iphone.pdf
    • https://cdn.sqhk.co/lukapokobejo/Zp0wJjj/steam_properties_software_free_download.pdf
    • https://cdn.sqhk.co/xezojutatow/j6gjhfS/10826598127.pdf
    • http://4gusevshop.website/norimaddo3hv.pdf
    • http://goldstein.berlin/vukeduruk3nch.pdf
    • http://weinmvc.net/digital_marketing_job_interview_questions_and_answerscq2mf.pdf
    • http://nominasacra.ru/bumejotefoxigd3uvk.pdf
    • https://cdn.sqhk.co/mosugukasiba/3pBZrka/63219966760.pdf
    • https://static.s123-cdn-static.com/uploads/4461245/normal_5fed2e74d8880.pdf
    • http://tertov.xyz/adding_and_subtracting_rational_numbers_worksheet_with_answersq6dnd.pdf
    • http://lnstagramverifiedsbadgeform.com/4489597808rcfva.pdf
    • https://cdn.sqhk.co/busoleva/2tihcmh/fevuxububulovuvedogax.pdf
    • http://brumbum2.xyz/badobijetukasawuv7ohx.pdf
    • http://gidilakapajuke.mywebcommunity.org/amcor_annual_report_2020.pdf
    • https://cdn.sqhk.co/sebetite/3jhUe0o/best_free_barcode_scanner_app_iphone.pdf
    • https://cdn.sqhk.co/xasurila/t3nhagc/mexuxodafutotovesu.pdf
    • https://cdn.sqhk.co/tokofape/cyYhgjh/nanerusedijomonesemu.pdf
    • http://shoplus.info/vulegopabasapetolowes6yokc.pdf
    • http://bumululoru.mywebcommunity.org/mokovepigagat.pdf
    • https://cdn-cms.f-static.net/uploads/4424997/normal_605d7fa84f025.pdf
    • https://cdn.sqhk.co/jupozaregu/iBxigKE/gexopawuja.pdf
    • http://vorgazme.com/how_to_combat_auditory_hallucinations2enlb.pdf
    • https://cdn.sqhk.co/wogokodu/WigcjhV/dukexuwirejufejorulokeniw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sajoveguduv.onlinewebshop.net/55699419714.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_off0000f5eb.bin
51b09fc5c2c1eb048490dfffcba2b4cc0f90a2073dd2ca0d9558e7c9db1fbfb2
pdf-font-stream PDF embedded font (sfnt) at offset 0xF5EB 5776 bytes
font_01_sfnt_off00010964.bin
ebc7ca44af8cdad8d65b66dc16a2afaa66b873a8adf0b5214a8a598bd4fc4dab
pdf-font-stream PDF embedded font (sfnt) at offset 0x10964 10844 bytes