Malicious PDF — malware analysis report

Static analysis result for SHA-256 97c9811bf43b8823…

MALICIOUS

PDF

34.6 KB Created: 2021-07-05 22:37:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 407512b5e52ff29842b31cb78f343f32 SHA-1: 4f0351c8f59eca0e857978645f1738d34e177b0b SHA-256: 97c9811bf43b8823e9346ea2eab3cd248e5196a3a3851eb118efc60b55662088
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by an ML classifier and contains a high-severity heuristic indicating it links to a 'free generator / game hack' lure. The document body and embedded URLs reinforce this, pointing to sites offering game cheats and generators. The primary IOC is the redirect URL, which is likely the entry point for a subsequent stage of the attack.

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-multiplayer-minecraft-server-game-hack PDF link annotation
    • http://library.persadabunda.ac.id/repository/robux-survey_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/hack-roblox-jailbreak-2021-money_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/roblox-free-dragon-ball-z-games_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/roblox-hack-anti-ban_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/rbx-hut_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/what-is-wurst_GM479516143.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/descargar-hacks-para-roblox-2021-con-fly_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/como-hackear-robux-en-roblox-con-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/generator-robux_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-executor-roblox_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-free-daily-spins-today_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/cheat-engine-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-hack-apk-download-latest-version_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31BE 22496 bytes
SHA-256: 3006091206621fdfd56154d22c4400693fc70cd04a1792da51ff47f18ab77c3d
font_01_sfnt_off00006400.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6400 18540 bytes
SHA-256: bd2c9319811100d4a63aefc818d44f48b7bf37d9ac2ac9e0807df4b94dfa85a2

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