Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc6064eeea7e3d1b…

MALICIOUS

PDF

35.6 KB Created: 2021-06-29 16:33:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: cea6f49298a0619f94b3ac6c205f5afc SHA-1: 36d13a9e0485ca3367c551054ea26be45e2baf5d SHA-256: fc6064eeea7e3d1bab4fa7b8c8a1eb532c82707a6e99153d6e8804a4f92d725f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links, including one pointing to known malicious redirector infrastructure at http://netcdn.co/app/431946152/tampermonkey-free-robux-game-hack. The document body and embedded links suggest a lure for game-related cheats or generators, likely to lead users to a phishing or malware download site. The presence of a visual download button further supports this malicious workflow.

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/tampermonkey-free-robux-game-hack In PDF document text
    • http://www.my-travel.com.hk/upload/files/give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/can-u-still-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/robux-prices_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/plutonium-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/project-alpha-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/coin-master-pc-hack_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-staff-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/coinmaster-spin-ml-link_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/daily-free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-get-free-robux-2021-codes_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/roblox-free-1m-robux_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/roblox-free-games-folder_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_off000031f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31F7 22780 bytes
SHA-256: f6d19f78ea1aeecc0891e99e5205f2c8789bfe258b5b1076e9271fc3b6604466
font_01_sfnt_off000064e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64E0 19504 bytes
SHA-256: e9b4d94de70eb15c9af8a4bd822dbd8a28838dabacbfe1ba03cd8edbd44301f2