Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9806eb00735984c…

MALICIOUS

PDF

44.3 KB Created: 2021-06-11 12:29:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a0b4de99b2052f6df093399fe5232127 SHA-1: 9d13c364bfc167cf9e07514ff2577eb7c88c84c8 SHA-256: d9806eb00735984ca9051c547bed0b650a34bd09f60e295200d4ec99e00e42fe
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains an embedded URI pointing to a download for 'Roblox Troll Hacks', suggesting a lure for users seeking game cheats. The ML classifier strongly flagged this PDF as malicious, and multiple other URLs were found embedded within the document. The presence of a visual download button heuristic further supports the interpretation that this document is designed to trick users into downloading a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.tw/app/431946152/roblox-troll-hacks-game-hack In PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-tiradas-gratis_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-account-in-roblox-password-and-username_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-minecraft-account-and-password-2021_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-get-free-robux-redeem-card-codes_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-free-spins-link-facebook-page_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/roblox-free-cool-marshmello-shirts_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/pokemon-go-font-free-download_GM1094591345.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-free-500-spins-link_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-to-make-any-purchase-in-roblox-free-2021_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-hack-iphone_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-roblox-app_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-hack-here_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-to-hack-in-lumber-tycoon-2-roblox-any-game_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
stream_004_off00005068.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5068 25164 bytes
SHA-256: 2aed62831a3690d8157baf03e02e4832a54a31e48fb29ad8975cd4b76fe48999
font_01_sfnt_off00008a93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A93 18184 bytes
SHA-256: 6c3c72bb925a5a93fffc5458566dd54595be7d4d22c4991e2cc165c08ed86c21

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