Malicious PDF — malware analysis report

Static analysis result for SHA-256 499af4513376df64…

MALICIOUS

PDF

80.7 KB Created: 2021-05-02 16:49:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf5940318320c4642537150dc9d4714f SHA-1: 152ffad4dd0d67f305b102b283d792c8919c9106 SHA-256: 499af4513376df6482abe6221ce849d02ab5d1a4aa514d13aa72b3a02567b792
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, appears to be a lure related to search queries.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jacksth.ru/strik?utm_term=what+are+good+girl+band+names
    • http://jovepodixowofow.mygamesonline.org/bonolota_sen_kobita.pdf
    • https://cdn.sqhk.co/zowonefaso/jlpiPgd/juzezabibavowuxejozen.pdf
    • https://cdn.sqhk.co/zanotunuzi/5hiijzw/mepan.pdf
    • http://pifemukopisare.sportsontheweb.net/detemu.pdf
    • http://olymp-trade.top/7698494696922tw1.pdf
    • http://generatorsale.ru/inclining_test_reportyqol3.pdf
    • http://nusezuretoti.scienceontheweb.net/impatiens_balsamina.pdf
    • http://gifavojam.scienceontheweb.net/automobile_parts_and_their_functions.pdf
    • http://rimka.xyz/ravutuwelorur9bsz.pdf
    • https://cdn.sqhk.co/dakizenewa/fhiicih/nfl_redzone_roku_app_not_working.pdf
    • https://cdn.sqhk.co/gosukutusu/HIk4gi8/warzone_tracker_perk.pdf
    • http://mamuxorap.getenjoyment.net/apache_4_score.pdf
    • http://xifadezuzurap.medianewsonline.com/56194887408.pdf
    • http://pop-marketplace.ru/4890190307zukg3.pdf
    • http://mon-compte-cmb.best/how_to_fix_camera_not_working_on_zoomlfhbw.pdf
    • http://kobivoweder.mypressonline.com/28377373564.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://ff999131-262c-4f46-aa1e-84c50d3d9e43.filesusr.com/ugd/a474dd_d32edc0d94e145e4830bd663ff0abde1.pdf?index=true
    • https://s3.amazonaws.com/mejifavo/11149822428.pdf
    • https://1b65b899-5fad-42bd-af9e-a3fb1d6a4c80.filesusr.com/ugd/a2ebd8_40e98708e5fa4552b51f5bb6a4d130ef.pdf?index=true
    • https://67a4337f-2b79-4d04-9c1d-2578c80f4945.filesusr.com/ugd/964009_6b41f3bd69e5492ca0a6eab0f9b29ccd.pdf?index=true
    • https://s3.amazonaws.com/rurovikejigibu/16149423882.pdf
    • https://s3.amazonaws.com/mukutud/does_brinkmann_still_make_smokers.pdf
    • https://c2dbac7f-2075-4dc1-ad03-af0d0352bff2.filesusr.com/ugd/278743_3c77293f946941d99031ae274eee14c4.pdf?index=true
    • http://wejufutaz.onlinewebshop.net/rimonesax.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_off0000faaf.bin
2eacf54f4c43f17547778d948fa4c000b7368e52a211652c6398308ae796ffe6
pdf-font-stream PDF embedded font (sfnt) at offset 0xFAAF 5392 bytes
font_01_sfnt_off00010cdc.bin
7bf291d224486bbd8317e9dd6f7b40471b842528b242fbb3941e4c4a3567ad8f
pdf-font-stream PDF embedded font (sfnt) at offset 0x10CDC 12148 bytes