Malicious PDF — malware analysis report

Static analysis result for SHA-256 50b28197b0b49ef3…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 10:17:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 5e27dfd1c03ac1a4c316a96eec55e3a3 SHA-1: 9234ff4f0d23a1cb3a9df8dfc2de5e71e7ef7b45 SHA-256: 50b28197b0b49ef31dd57f7c0ff59b7ac9c34b4e53f568311dac343943d92bae
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document employs a game hack lure, specifically targeting users interested in free items for games like Roblox. It contains numerous embedded URLs that redirect to external sites, with the primary one being http://netcdn.tw/app/431946152/how-to-get-free-items-on-roblox-game-hack. This suggests the document's purpose is to drive traffic to potentially malicious websites, likely for phishing or malware distribution.

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/how-to-get-free-items-on-roblox-game-hack PDF link annotation
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-get-free-robux-in-roblox-legit_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/robux-match_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/hacks-for-roblox-the-labyrinth_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-free-inventory_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/get-free-robux-by-downloading-games_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/minecraft-for-free-apk_GM479516143.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/mount-everest-roblox-free-rescue-team-gamepass_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-link_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-do-you-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/all-free-items-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/is-it-possbile-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-cheats-uhrzeit-ndern_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-change-username-free-no-waiting-robux_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-trolling-outfit-for-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off00002f17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F17 22328 bytes
SHA-256: d6ae7f967751e3c32c6ddac5fede92e2280f774e550fe71124ff1b18ce5ab072
font_01_sfnt_off000060c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60C8 19176 bytes
SHA-256: 06841236c1eb82d9be36a7391043c424c1bf067de4fb46c8cc94a5f557141350

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