Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd8b9d7ece6a352c…

MALICIOUS

PDF

33.2 KB Created: 2021-07-05 19:34:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a7fb13af8555fbe290b52e3b15a3a620 SHA-1: 6acc6f0b8820a5c1d86473dd63473e3c413b229a SHA-256: bd8b9d7ece6a352c76cf0ef5d05963c698f0e9cd4cc33fd60faae0c1b631d771
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a critical heuristic firing for a game hack redirect lure, pointing to known malicious infrastructure. The embedded URL and document body text reinforce this, indicating a social engineering attempt to trick users into visiting a potentially harmful site. No scripts were extracted, but the primary attack vector appears to be a malicious link within the document.

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/479516143/is-minecraft-bedrock-free-game-hack In PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-dollhouse-hacks_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/robux-sign_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/cheats-for-bear-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spins-gratis_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-grand-blox-auto-money-cheat_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-any-roblox-group_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/wurst-client_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-spin-blogspot_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-coins--spins_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/robux-hacks-for-computer_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-many-warning-for-hacking-do-you-get-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/wurst-18-9_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-zombie-rush-hack-script_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/report-abuse-robox-paist-bin-free-robux-code_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coinmasterdailyfreespins-com_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-apple_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-account-hack-download-free_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/get-robux-for-free-2021_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_off00002eb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EB5 21732 bytes
SHA-256: 24f03bc3593764ee9fa68b08168ab618fc2af6f214af2953eb6dfc753d825e82
font_01_sfnt_off00005e48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E48 18560 bytes
SHA-256: 2cf9d2c17787111468ec72d6b2ad13757ff8f8906a02aba501c2b47558e3271e

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