Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d49f876cbd7b3ce…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 15:53:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: bcc5f55c3ea2c3fffad8597e787c00a8 SHA-1: bf273dbbfac3952e531518375bd7cb3aa5332178 SHA-256: 3d49f876cbd7b3ceb8928688faa7605caf7d1029a0c417b68fecedc754b06501
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/431946152/roblox-free-item-id-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/nicsterv-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-windows-10-edition-hacked-client_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-roblox-exploits_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-today_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-tiktok-followers-without-human-verification_GM835599320.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-hack-android-no-root_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-robux-on-mobile-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/a-hacker-on-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/csgo-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/pepsi-hacks-roblox-script-cbro_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/injet-cheats-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/robux-get-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-roblox-bot-accounts_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-t-shirt-free_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_off00003138.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3138 22704 bytes
SHA-256: ce4186697e9f0385238e003eb9c644b33c114dd555c678cd7d624616e353b570
font_01_sfnt_off00006479.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6479 19188 bytes
SHA-256: dfff3ce22c812d54096303e7d543b3ed6a83298ebb2aefc523cd42455feed2c7

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