Malicious PDF — malware analysis report

Static analysis result for SHA-256 50288f2f79b34d6a…

MALICIOUS

PDF

34.0 KB Created: 2021-07-04 08:42:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4efa908712fd0f64e4dd55b495c63321 SHA-1: d65003fcc44b1250796ef96fd84e369a41e55a65 SHA-256: 50288f2f79b34d6ab63a99f2327d138ddb09595d02a4fad5e46361fe57359037
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are SEO-optimized URLs related to game hacks and cheats. The primary URL, http://netcdn.tw/app/835599320/how-to-get-free-tiktok-likes-game-hack, is presented as a lure for free TikTok likes, indicating a likely phishing or malware distribution attempt. The heuristic 'PDF_SEO_LINK_FARM' confirms the presence of a large number of such links, suggesting a coordinated effort to drive traffic to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/835599320/how-to-get-free-tiktok-likes-game-hack PDF link annotation
    • https://lib.bunghatta.ac.id/app/repository/roblox-no-cooldown-cheat-engine-weight-lifting-simulator-2_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-villages_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-admin-in-any-roblox-game_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/robux-hack-fr_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-roblox-download-no-virus_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/1-million-free-robux-landon_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-tiktok-likes-no-human-verification_GM835599320.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-free-robux-on-roblox-mobile-2021_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/como-descargar-hacks-para-roblox-sin-virus_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/hack-para-sharkbite-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/is-there-a-way-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-robux-fast_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/robuxian-youtube-page-secret-claim-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/fgroup-that-gives-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/newo-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/best-free-spins-for-coin-master_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_off0000328d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x328D 21836 bytes
SHA-256: a29f5f4a797fd1f220ef4aec61f3299e121f1378652aaeaec3aacb742ee3896e
font_01_sfnt_off000062b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B1 18136 bytes
SHA-256: 4d23d17564ac963ef56207bc366511735ae252a1938a9d8223d70a11ebc0d20d

Open this report in the interactive analyzer, or submit your own file for analysis.