Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7c9127168973bca…

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 19:28:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 95c070d03439b65816c5f7fbd4d29f08 SHA-1: e0cb3d41a0dd380f1bead6bf1af9cb2661532cd7 SHA-256: a7c9127168973bcae9ef75a5f2be7c1b830284a0c920b1015d4a035c490b1f52
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary focus on luring users with promises of free game items and hacks. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' specifically flags this deceptive tactic. The ML classifier also strongly indicates maliciousness. The document likely serves as a phishing or scam attempt, directing users to potentially malicious websites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/479516143/free-minecraft-java-code-game-hack PDF link annotation
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/coin-master-free-spins-link-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/coin-master-new-link-free-spin_GM406889139.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/tiktok-free-10-likes_GM835599320.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/how-to-get-minecraft-on-chromebook-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/free-robux-net_GM431946152.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/coin-master-free-spins-link-download-for-iphone_GM406889139.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/free-robux-no-human-verification-2021-mobile_GM431946152.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/minecraft-hacks-for-2b2t_GM479516143.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/coin-master-hack-using-cheat-engine_GM406889139.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/do-robux-generators-work_GM431946152.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/is-roblox-free-on-nintendo-switch_GM431946152.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/coin-master-free-coins-and-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/coin-master-free-spins-apk-2021_GM406889139.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/getrobux-ninja_GM431946152.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_off000032c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32C2 21976 bytes
SHA-256: a1b92d12c292ae497cb8ffc3533745cb94eb081592bd780bb9343c3879bb63d9
font_01_sfnt_off00006328.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6328 18452 bytes
SHA-256: 5311ff163cb5fa31e0ff5346c8b8368b0c4116a432924275301f829a2985271a

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