Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d5a45b44761cbc1…

MALICIOUS

PDF

33.5 KB Created: 2021-07-08 05:04:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 08dd80d5176ae027733c2d1ef896becd SHA-1: 61cfa392eb7a1a9eafb5ae6444772fd6c11cc5dc SHA-256: 4d5a45b44761cbc180b05fc007bf34c733b65cf5cf9484dc010d00b930729d84
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' lure. The document body and extracted URLs reinforce this, pointing to sites offering game cheats and hacks. This pattern suggests the PDF is designed to trick users into visiting malicious URLs, likely to download further malware or engage in phishing.

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/is-minecraft-education-edition-free-game-hack PDF link annotation
    • https://library.fdk.ac.id/repository/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/hack-roblox-online-com_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/youtube-roblox-free-builders-club_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-gold-cards-free-2021_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-robux-please_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-download-roblox-strucid-hacks-for-free_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/get-free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/hacks-for-no-scope-sniping-roblox_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/noclip-cheat-for-roblox_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-time-speed-hack_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/hack-jailbreak-roblox-2021-krankheit_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/robux-hack-apk_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-ban_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/www-free-robux_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/doomsdire-battle-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-change-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/titan-hack-roblox_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_off00002f92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F92 21972 bytes
SHA-256: b1c81b57462787990fd33402cc6ca4b1931ce2df262694bab85fee0fdcc219b3
font_01_sfnt_off00005ff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF5 18312 bytes
SHA-256: eecac33872f4bf99db25d0145d9acf2ab6d7270ffb9fefd56cdfeedcf9aa8f6d

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