Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cb7fd49a8f48a7a…

MALICIOUS

PDF

36.0 KB Created: 2021-06-29 21:27:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ddf877ed2161fdae1baf4817cd63e211 SHA-1: 71fecbb97ee8e6f95664f24a19110bba5d03919a SHA-256: 4cb7fd49a8f48a7a922e973e6ec74b053908340fa54dc8c5e8d95085773b8153
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically advertising 'Roblox Hack By Robuxian'. The document body and embedded URLs strongly suggest a lure for users seeking game cheats or currency. The primary malicious URL identified is http://netcdn.co/app/431946152/roblox-hack-by-robuxian-game-hack, which is likely used to deliver a secondary payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/roblox-hack-by-robuxian-game-hack In PDF document text
    • https://library.itn.ac.id/perpusitn/repository/como-evitar-que-un-hacker-te-hackee-en-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-leaderboard-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-a-acc-with-btools-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-code-free-beyblade-burst_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/trailer-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hawt-sauce-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/robux-hack-pw_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roxpoes-roblox-exploits--hacks_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/real-free-robux-websites_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-hack-free-download_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-spins-on-coin-master-2021-iphone_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/cheats-coin-master-free_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-blogspot-links_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hackear-juego-coin-master-espaol_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-spin-and-coin-links_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_off00003605.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3605 22288 bytes
SHA-256: fe637bd2082b4cf663d721f6a14f766e367386740fb63b41a09f928e40c7dbf3
font_01_sfnt_off000067a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67A3 19096 bytes
SHA-256: 2959174be2d04cbefd972fd788a58e45fe583c1c4b01edef2b0c9b53b4416194

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