Malicious PDF — malware analysis report

Static analysis result for SHA-256 5039e82c58418fd1…

MALICIOUS

PDF

33.9 KB Created: 2021-07-02 02:16:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5383e624d3b835ebf5ba3f8266add0a8 SHA-1: dcf0cc384d2d13f911ffb10c2f960d2c93ad5d6a SHA-256: 5039e82c58418fd100003115e695e9f38d076d5dacbfbae7143ab45af82dc44f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a known malicious redirector, specifically http://netcdn.co/app/431946152/script-for-robux-free-game-hack. The document body and heuristics indicate a lure for free game hacks and currency, a common social engineering tactic. The presence of embedded URLs and the nature of the lure suggest an attempt to trick the user into downloading or executing further malicious content, likely involving JavaScript execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/script-for-robux-free-game-hack In PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/roblox-jailbreak-speed-hack-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/how-to-make-a-cool-roblox-avatar-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/the-neighbourhood-roblox-money-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/free-roblox-accounts-for-phantom-forces_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/how-to-get-free-robux-2021-with-no-survey_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/how-to-be-a-vip-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/roblox-bee-hive-simulator-how-to-get-a-free-egg_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/free-skins-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/tiktok-viewer-free_GM835599320.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/robux-hack-2021-pastebin_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/hack-construction-simulator-script-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/www-bloxyworld-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/i-got-hacked-on-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
stream_001_off00002c91.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2C91 22672 bytes
SHA-256: db9c61616e4977de9d72bb18583a48898d6eddc823c083520b30725f9f92eaa3
font_01_sfnt_off00005fc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC4 19116 bytes
SHA-256: aa9f554ec297b4e7c4edaf31b51c4f93fe79cd8a727aa0e3be1c961e5cfc9c15