Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdfd82903c28ec08…

MALICIOUS

PDF

35.1 KB Created: 2021-07-05 21:02:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 97404d17fac0990f634aa74f4b97dd12 SHA-1: baad334f66668e69ed6c822859fee805624e3675 SHA-256: bdfd82903c28ec083d3f74ecd124f26d1ca75c75ad170aa283bb51c53f7e5bb3
160 Risk Score

Malware Insights

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

The PDF document contains a lure related to game hacks, directing users to a malicious redirector URL. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. No scripts were extracted from this sample, but the document's structure and embedded links suggest it is designed to exploit user interest in game cheats to lead them to malicious sites.

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/406889139/how-to-hack-coins-in-archery-master-3d-game-hack In PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-freebies-robux-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/pubg-uc-indonesia_GM1330123889.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-work-at-a-pizza-place-manager-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-face-roblox-catalog_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-adopt-me-money-hack-2021-script_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/code-hack-speed-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-free-robux-2021-android_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-coin-master-credit_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/como-tener-rpa-de-robux-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-coins-in-assassin-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-coin_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/minecraft-bedrock-server-hosting-free_GM479516143.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_002_off000031ea.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31EA 22712 bytes
SHA-256: 2b6d9b059e024fdee9050abec096b89468dc5b75756b92423906e8324bd378da
font_01_sfnt_off000064cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64CC 18856 bytes
SHA-256: 445c36d795ac989f2c30bdde00fa113f19ffe98633a4d1fc8bfa4507aa191fb8

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