Malicious PDF — malware analysis report

Static analysis result for SHA-256 c41657c9a0b24f45…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 21:05:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2829cf89965e3c666552d10d26ec759f SHA-1: 40f9c6d6f3456424cddcac0127634b99a0d56aab SHA-256: c41657c9a0b24f451152f2ead92a1d1b4cf6d53ff3aec7787747d3e6b819a9bf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains embedded links that redirect to known malicious infrastructure, specifically advertising free Robux and game hacks. The primary URL, http://netcdn.tw/app/431946152/free-robux-gift-card-codes-2021-game-hack, is identified as a malicious redirector. The document body and heuristics indicate a lure for users seeking in-game currency or cheats, which is a common social engineering tactic. No scripts were extracted, but the embedded URLs and redirection behavior are strong indicators of 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/free-robux-gift-card-codes-2021-game-hack In PDF document text
    • https://www.zagorjeadventureteam.hr/files/free-mobile-360-roblox_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/free-robux-app-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/free-minecraft-account-list_GM479516143.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/minecraft-linux-free_GM479516143.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/coin-master-free-raid-link_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/pokemon-go-free-quest_GM1094591345.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/weird-roblox_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/free-roblox-clothes-event-2021_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/roblox-hack-executor_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/roblox-free-item-codes_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/games-like-minecraft-but-free_GM479516143.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/does-roblox-give-out-free-robux_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/pubg-uc-mod-2021_GM1330123889.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/tiktok-free-credit_GM835599320.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/minecraft-bedrock-edition-pc-free_GM479516143.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_off00002d76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D76 22364 bytes
SHA-256: 4c773224fbbfa796350fc6bc49db6014908fd110e6a51b1916df79255cc7f4b4
font_01_sfnt_off00005f94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F94 19516 bytes
SHA-256: 29e75f30c5e86761bb92b3b01e6b6c9178fe3a430d56702e6e4d31a38e0984ae

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