Malicious PDF — malware analysis report

Static analysis result for SHA-256 6251086b564f874d…

MALICIOUS

PDF

34.4 KB Created: 2021-06-26 04:37:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0930c984beb7940e5ba17116746e1949 SHA-1: 3089641db4e03b955e8ac3a6b1439bb5458d00ab SHA-256: 6251086b564f874d584f282c4ea7aad248cde6ad40b5dc63e40a95180278411c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and free in-game currency. The heuristic firings confirm these links lead to known malicious redirectors. The document body and embedded URLs suggest a lure for users interested in online games like Roblox and Coin Master, aiming to trick them into visiting potentially harmful sites.

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-do-you-become-a-hacker-in-roblox-game-hack In PDF document text
    • http://www.arichuna.com/images/files/roblox-rocitizens-intext-cheat_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/coin-master-tiradas-gratis-2021_GM406889139.pdfIn PDF document text
    • http://www.arichuna.com/images/files/free-crimson-winter-scarf-roblox_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/free-roblox-groups-with-funds-list_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/free-robux-live_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • http://www.arichuna.com/images/files/coin-master-hack-online-cheat_GM406889139.pdfIn PDF document text
    • http://www.arichuna.com/images/files/can-i-have-robux_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/noob-invasion-roblox-get-free-kills_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/free-robux-now-com_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://www.arichuna.com/images/files/hacker-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/sk8-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/hack-ma-pin-roblox_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/hack-coin-master-android-game_GM406889139.pdfIn PDF document text
    • http://www.arichuna.com/images/files/roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/hack-coin-master-dzooka_GM406889139.pdfIn PDF document text
    • http://www.arichuna.com/images/files/free-robux-codes-no-verification_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_off00003056.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3056 21768 bytes
SHA-256: aa86701bfa4c6e635a0310e045f2b111a082c66325f4cee53e06aa1c1af6c4ac
font_01_sfnt_off00006014.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6014 19548 bytes
SHA-256: 78370147a08e121d2c8c3e24d5d2839859f8297ea9a085f25ff133da33637c81