Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e15d75ea1db15a8…

MALICIOUS

PDF

33.6 KB Created: 2021-06-18 06:11:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a32d478403a2cbd82b62cc7da8517601 SHA-1: d55c7e226af61a9a968456df8a3e5c797ef27f70 SHA-256: 0e15d75ea1db15a83f72b79937057859191aba4b4de21235542b62f501d853fb
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. 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 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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.co/app/431946152/free-download-on-roblox-game-hack PDF link annotation
    • https://perpustakaan.itda.ac.id/repository/hacking-heists-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-hack-roblox-to-get-free-items_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/pro-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-minecraft-thumbnails_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-script-hacks_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/wwwhaktutsin-2021-08-coinmasterfreespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-free-robux-mobile-root-needef_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/best-free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/cch-hack-robux-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-exploit-download_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-script-hack-rovive_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/daily-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/noob-vs-pro-vs-hacker-vs-god-minecraft_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-tutorial-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/haktuts-coin-master-free-spin-link_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_off00002eea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EEA 21440 bytes
SHA-256: a4d20426d798456d8761388110b60461ee227e25bbf7181b16a3298c18356cef
font_01_sfnt_off00005ddc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DDC 19156 bytes
SHA-256: bbe46605a7caa580de768503c44de40375749fe890c749d78d56a21c65f1ddeb

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