Malicious PDF — malware analysis report

Static analysis result for SHA-256 69e64c81e1ee58c6…

MALICIOUS

PDF

75.2 KB Created: 2021-03-27 12:27:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a6423e641f9e78d88be6c72ea6c01df SHA-1: dbfa38ee8d4d159f605b59f9f7d39e0c4ea93b26 SHA-256: 69e64c81e1ee58c676e83cd91b77afa387a0aaf1b9744f26ed0a0326cb89f907
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, with heuristics indicating an embedded external URI. The document body, though heavily obfuscated, suggests a lure related to a 'Netgear jgs524v2 manual'. The primary IOC is the external URI pointing to a suspicious domain, likely used for phishing or to serve a secondary payload. The PDF structure and embedded URI suggest an attempt to trick the user into visiting a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://botokaw.ru/strik?utm_term=netgear+jgs524v2+manual
    • https://fasuwilobavofe.weebly.com/uploads/1/3/4/4/134489762/2513577.pdf
    • https://cdn.sqhk.co/lagazowasobo/Hhhclhb/mukovavipedozuv.pdf
    • https://static.s123-cdn-static.com/uploads/4484115/normal_6009063ba51cd.pdf
    • https://cdn-cms.f-static.net/uploads/4490265/normal_5fd09fb387cd1.pdf
    • https://static.s123-cdn-static.com/uploads/4367640/normal_5ff5bfd5d0225.pdf
    • https://sunapibabe.weebly.com/uploads/1/3/3/9/133999858/fafarinajoxuzapofad.pdf
    • https://cdn.sqhk.co/dutaxato/ZgeX3hb/klondike_solitaire-_msn_games-_free_online_games.pdf
    • https://static.s123-cdn-static.com/uploads/4408001/normal_5febf6fe1aff9.pdf
    • http://jegagavakunumog.iblogger.org/muvuvijuruposevimifewogix.pdf
    • https://cdn.sqhk.co/limiwebu/igQKggr/nafifapa.pdf
    • https://cdn.sqhk.co/malevevipali/BMUChcb/blossom_blast_saga_online_play.pdf
    • https://cdn.sqhk.co/bupewazadufa/cgcl2if/free_halloween_wallpaper_for_desktop_background.pdf
    • http://fukiwurezopukof.mywebcommunity.org/line_6_hx_stomp_firmware_2.8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pobuwejugu.epizy.com/ruregoxapuvisumowo.pdf
    • http://wiwafejopof.epizy.com/55542601403.pdf
    • https://uploads.strikinglycdn.com/files/8a3bac9b-25c6-405b-9190-340647720f58/mcculloch_electric_string_trimmer_parts.pdf
    • https://uploads.strikinglycdn.com/files/ce0fd770-cbc5-492f-9e53-eb05c43a26f1/how_long_does_a_pressure_cooker_take_to_cook_rice.pdf
    • http://kapirexazi.onlinewebshop.net/entrepreneurship_development_programme.pdf
    • http://wimifus.rf.gd/static_and_dynamic_character_worksheet.pdf
    • https://uploads.strikinglycdn.com/files/920d80a6-5497-4197-b24d-d1c5c5fa976b/the_chronicles_of_narnia_tv_series_netflix.pdf
    • http://ketabigumowun.atwebpages.com/oracle_19c_virtualbox.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_off0000e5bd.bin
2ee1dfe73004bafa02eeb04e31fd3aa5cdfeb07d01ed1c839e7186912dcf1c10		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE5BD 5452 bytes
font_01_sfnt_off0000f856.bin
899bfd90ccddc0315a5b6fe975ccfb3417b1d6855e95ab47306373b4c484cdb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF856 11976 bytes

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