Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fb9ab1ccb85ea18…

MALICIOUS

PDF

33.3 KB Created: 2021-07-05 08:03:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 37a0d388101e337aeca18a0d08924280 SHA-1: f50cf71e1f6d1179d4caebf7ca4be6baac55c269 SHA-256: 2fb9ab1ccb85ea189f140d2206a4359f3585dc2f9657c66300beb0906b84b902
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free in-game currency. The document body and embedded URLs suggest a phishing attempt to trick users into visiting malicious sites, likely for credential harvesting or malware distribution. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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.tw/app/479516143/what-is-a-minecraft-client-game-hack In PDF document text
    • https://fib.ub.ac.id/sac//repository/2021-no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-free-robux-apps-download_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-hacks-for-imac_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-python_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/ccv3-roblox-cheat-menu_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/no-human-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-800-robux-code-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-inpect-console-working-youtube_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-i-have-free-wifi_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-spins-for-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/followers-bot-free-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-free-spins-2021-app-download_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-hair-roblox-boy_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-fire-vs-pubg-tik-tok_GM835599320.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_off0000302b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x302B 21904 bytes
SHA-256: c7e88a1cfaeee8c5d82216a10cd3034d5d830025b1f5b4fdf7ff81461075d65d
font_01_sfnt_off00005fa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA5 18292 bytes
SHA-256: cc8de4d5cd269b7874ace7bd1df7c96e4a27e52416941d0a4b2fd16f13afc98a

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