Malicious PDF — malware analysis report

Static analysis result for SHA-256 3643ae086d435a9c…

MALICIOUS

PDF

34.5 KB Created: 2021-06-26 16:45:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6c1e7b8ea63feb65f2cc4d478a5da672 SHA-1: 72234b5c92ca34afe7e41b8986778755233653fc SHA-256: 3643ae086d435a9cbb37d341d42ca324549f924abbb903337e34cc26b71193f7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game currency or hacks to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or downloads. The document body and embedded URLs reinforce this theme, aiming to exploit user interest in popular games.

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-to-get-free-robux-on-roblox-mac-game-hack In PDF document text
    • http://repository.ummy.ac.id/repository/how-to-login-to-cerberus-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/how-to-get-2021-robux-free-2021_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/free-cloth-on-roblox_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/free-house-for-meep-city-roblox_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/roblox-jailbreak-hack-script_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-link-app_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/robux-get-com_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/weight-lifting-simulator-2-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/best-free-script-injector-for-roblox_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/rob-hacker-robux-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_off00003249.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3249 21420 bytes
SHA-256: 4bd2bd2c51be0887dae529910c5798acff60229662ca6d6ac255d0dd139321ae
font_01_sfnt_off00006141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6141 19256 bytes
SHA-256: 28293688d1cf70318a2ae151204baa3247cacbbbac603d909a6c8d9c5616e214