Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1286604bf056546…

MALICIOUS

PDF

34.2 KB Created: 2021-07-04 03:39:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4b16c1836b9a4e210c842531835eb315 SHA-1: 6d6aa77249f83628f13900a7ec85c0458ae8784b SHA-256: d1286604bf056546564f0c46d0c55b044f61a0ef4831a384f0fd5c6e49e0e0a8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains multiple links to known malicious redirectors, disguised as 'free generator' or 'game hack' lures. The primary link, http://netcdn.tw/app/431946152/robux-free-2021-game-hack, is identified as a malicious redirector. The document body and embedded URLs reinforce the theme of exploiting popular games for in-game currency or hacks, a common social engineering tactic. No scripts were extracted, but the presence of multiple malicious links indicates a phishing or scam attempt.

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/431946152/robux-free-2021-game-hack In PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/javascript-free-robux_GM431946152.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/how-to-get-free-robux-enter-code_GM431946152.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/prisonbreak16-hack-script-roblox_GM431946152.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/does-cheat-engine-work-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/roblox-hack-ios-cydia_GM431946152.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/cheat-engine-2021-roblox-speed-hack_GM431946152.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/cartoony-animation-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/how-to-get-stuff-that-cost-coins-free-mcpe-master_GM406889139.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/how-to-buy-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/how-to-get-robux-on-roblox_GM431946152.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_off00002f72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F72 22020 bytes
SHA-256: c6c7bb0d6afb89d50e0026faa45a29bfc3a8e589ffed33e096fb4055a7967ade
font_01_sfnt_off00006063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6063 19116 bytes
SHA-256: 4c1a9a86b4b6699ac70fc87850995a4a744955ac9e840568fd45137616a01a77

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