Malicious PDF — malware analysis report

Static analysis result for SHA-256 8610da47a0ee9e3d…

MALICIOUS

PDF

26.1 KB Created: 2021-06-25 12:17:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ee14d8f5f99cc4d3764ec9ff1f9410b9 SHA-1: 8b128b1584f273f34b53c04ec8a35db916ee449e SHA-256: 8610da47a0ee9e3d2805439195b56a497305804abcb92446ad4838dac874c7c6
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.co/app/431946152/free-robux-codes-live-game-hack. This lure is designed to trick users into believing they can obtain free in-game currency or hacks. The document body and heuristics indicate a social engineering tactic to drive traffic to potentially malicious sites. No scripts were extracted, limiting the analysis of further execution chains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 3

  • 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.
  • 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/free-robux-codes-live-game-hack In PDF document text
    • http://elib-s2.ubl.ac.id/repository/popular-roblox-games-for-free_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-rs-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-assassin-hack-coins_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-free-rc7_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-cosmetic-items-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-infinite-robux-hack-apk_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/robux-for-free-glitch_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-be-a-hacker-in-roblox-booga-booga_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-how-to-hack-prison-life-202-2021_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-free-gamepass-hack_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-craftwars-cheats_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/city17-city-rp-roblox-free-guns_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-royale-high-school-diamond-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002aae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AAE 22484 bytes
SHA-256: 54aa60554c10605add0dbd020c5556a487585ab97500113254a9b3f088689e1a