Malicious PDF — malware analysis report

Static analysis result for SHA-256 99bcea87ce682698…

MALICIOUS

PDF

35.4 KB Created: 2021-07-03 17:24:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 1fbdaad14eda81f3bd40b10e7f7ad00e SHA-1: e25025c0f38ed571cc7ef7a911c9dfeb319fda2f SHA-256: 99bcea87ce682698604e4da05fc50eaefd9d67afd7eab8f699e1197ef7e0923f
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks, specifically targeting Roblox players, and includes a link to a suspicious URL. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' indicates a redirection to a game hack site, and 'SE_PASSWORD_ARCHIVE_LURE' suggests a common tactic to bypass security scans by providing password instructions for an archive. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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-cheat-codes-game-hack PDF link annotation
    • https://library.itn.ac.id/perpusitn/repository/who-tiktok-free-views-and-likes_GM835599320.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-hacks-unknowncheats_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-jailbreack-hacks_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/trince3d-robux-hack-pastebin_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hacks-in-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-roblox-codes-for-toys_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-phantom-forces-hack-aimbot_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/is-roblox-free-on-xbox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-minecraft-wallpaper_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-do-you-hack-people-on-roblox-assassin_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spins-ios_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-dominus-rex-and-messor-roblox-youtube_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hacking-money-in-vehicle-sim-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-cheat-in-roblox-obby_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-hax_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spins-2021-generator_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-no-password-obby_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-someones-roblox-profile_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_off000032aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32AA 22696 bytes
SHA-256: 172029ede2f147fcd9400e9a343ed8e9bb20e2261d7257cf92291c195e62b546
font_01_sfnt_off000065aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65AA 18932 bytes
SHA-256: a95ed2ebfaa41175af61b40c976dd9a66f12315416a1f48c3ae7e56a22336851

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