Malicious PDF — malware analysis report

Static analysis result for SHA-256 da06875e6ab6109e…

MALICIOUS

PDF

34.7 KB Created: 2021-07-07 11:18:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d96019522d231bbca59b2fd08b87fdbb SHA-1: 6cc1a8e8c36b6992cf3eb1d5e890bcdebc90998c SHA-256: da06875e6ab6109ee720581703ae639ba1079dea2c8cac45df2f3b46c7f5d7c4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and game hack lures, such as 'free-robux-generator-no-verification-game-hack'. These links are designed to trick users into visiting potentially harmful websites. The ML classifier also strongly flagged this PDF as malicious, indicating a high probability of malicious intent.

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-generator-no-verification-game-hack In PDF document text
    • http://www.valenciamaids.com/userfiles/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-minecraft-windows-10-with-java_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/como-hackear-el-juego-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-free-spin-bonus_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/troll-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/cheat-roblox-building-simulator_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/toolbox-apk_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-free-spins-twitter_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/roblox-hack-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/oprewards-com-robux_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/roblox-skin-free_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-avatar-roblox_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_off00002ef5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF5 22832 bytes
SHA-256: b568992b2b6b2c6e23ddd515ee086ac34bcfb4dc5e23dc99ef19f5fcb188911e
font_01_sfnt_off00006251.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6251 19072 bytes
SHA-256: e7f1824e88bb300dfe73d0982d2e974b610cf43959a10b1d34f5500451ac8bd8

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