Malicious PDF — malware analysis report

Static analysis result for SHA-256 75bee15b075c14e8…

MALICIOUS

PDF

35.0 KB Created: 2021-06-26 17:26:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 639e4e3be9417e95bac2a34fdbb414c7 SHA-1: e3de6cd449ce6dcb196ae22d6547c6f01a2830ce SHA-256: 75bee15b075c14e8a3779536d0e718c109078d298d61890a4161d9f0340710d6
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 'game hacks' and 'free robux' to lure victims. The primary redirector URL is http://netcdn.co/app/431946152/how-to-hack-someone-on-roblox-and-steal-theyre-robux-game-hack. This suggests the document's purpose is to deliver a second-stage payload or lead users to a phishing site by exploiting interest in game-related cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/how-to-hack-someone-on-roblox-and-steal-theyre-robux-game-hack In PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-genuine-hack_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-mad-city-free-cars_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-cheat-free_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-get-free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/notepad-hack-roblox-download_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/hack-roblox-mad_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/levvvel-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-tix-robux-hack-download_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/minecraft-xbox-360-free-download-code_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/serveur-discord-hack-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-free-spin_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/rblx-city-free-robux_GM431946152.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_off00002fc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC9 22484 bytes
SHA-256: 7c5269c4bb685dbc4a02913283fde70c86039867a2e8137f671f9fecfd3af42b
font_01_sfnt_off0000618e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x618E 19844 bytes
SHA-256: 3d047b3c06056bb6eeb65371bd60d8b8d076719167833f4b25bb9b702830f66f

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