Malicious PDF — malware analysis report

Static analysis result for SHA-256 91e58defea9cb4ca…

MALICIOUS

PDF

35.1 KB Created: 2021-07-03 16:10:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c15e2c761228274b923f4b583d72b480 SHA-1: c922d85a28fdbb31b74151dcf4fa7d8e78198893 SHA-256: 91e58defea9cb4ca83a87de8046e2a0b1541d12b4d240d0273e1334fa16a6e0c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free game currency and hacks, directing users to a known malicious redirector. The document body contains multiple URLs, including the primary malicious redirector, suggesting an attempt to lead the user to a potentially harmful site. No scripts were extracted, but the PDF structure itself contains malicious links.

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/how-to-get-free-robux-game-hack In PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/roblox-com-free_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/optifine-pe_GM479516143.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/coin-master-free-redeem-code_GM406889139.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/roblox-barren-hack-script_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/how-do-i-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/free-robux-games_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/how-to-hack-m-coins-mcpe-master_GM406889139.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/coin-master-free-spins-app-android_GM406889139.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/free-robux-hack-generator_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_off00003184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3184 22992 bytes
SHA-256: 244994d3ecf45cc065f8493b01fd719fdcee6b7d942d04cc2df9f9d8be4475bb
font_01_sfnt_off00006432.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6432 18984 bytes
SHA-256: b02f235e187ca63825268846ce24859b9c73d6f06522f0e44481555b58ecada8

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