Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ea66d91739eef86…

MALICIOUS

PDF

33.5 KB Created: 2021-07-05 18:01:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 09133515f33040d9feec67d024fb80ee SHA-1: cfff6c5591ef43e965975b842296b234141f7561 SHA-256: 8ea66d91739eef86c1a3643b0b1a196fae1bdd5bed9e3cda4cbc2c5e654dc88a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a prominent link to 'http://netcdn.tw/app/431946152/roblox-robux-game-hack', which is identified as a lure for game hacks. This suggests the document's primary purpose is to trick users into visiting a potentially malicious site. While no scripts were explicitly extracted, the PDF structure and the nature of the lure indicate an attempt to exploit user interest in free in-game items, likely leading to a secondary download or phishing attempt.

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-robux-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/roblox-epic-mining-2-beta-cheats_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-vip-admin-commands-with-all-permissions-for-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-mod-version-free-download-34-4_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-jet-free_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-roblox-promo-codes-gen_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-50-robux-card-code_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-gamepass-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/game-dev-tycoon-2-roblox-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/robux-download_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/pokemon-go-free-12k-eggs_GM1094591345.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/omplete-surveys-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-spins-coin-master-daily_GM406889139.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_off00002e28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E28 22100 bytes
SHA-256: 1ec8afbf3df40ad1e97facb4c683585b7c970da86a0ff363fcf293da21a67611
font_01_sfnt_off00005eff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFF 18628 bytes
SHA-256: 91fe40ca7b1c63e097b3ed98f551f0053b3fa477182f2dddb1f8374deacdf7be

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