Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bedde4f5dc80ee1…

MALICIOUS

PDF

32.8 KB Created: 2021-07-22 14:22:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 495bd71c2b72d32a71d1744ca5847a20 SHA-1: c444a2fdf6f969ed3a14c1c9fe6a7478d22c775a SHA-256: 2bedde4f5dc80ee17954dee8d3cc81e143259ae11151f7b98ca56e478c3686e0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and text that explicitly mention 'Roblox Hack Client' and 'Robux Generator', aiming to trick users into clicking malicious links. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' confirms this social engineering tactic. The primary IOC is the redirect URL, which is likely the entry point for a further stage of the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://netcdn.tw/app/431946152/roblox-hack-client-game-hack PDF link annotation
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002b82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B82 22248 bytes
SHA-256: e4b65a26f2a982c65f525bb61b9f48ea0f86a132d42542048cfd875ee3172625
font_01_sfnt_off00005d04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D04 18592 bytes
SHA-256: 9b1a4ebf879a07bf8de669c3d2a62a283ca76e3a96f19070a05b062fb78a4c3a

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