Malicious PDF — malware analysis report

Static analysis result for SHA-256 3685b0c1c91ea358…

MALICIOUS

PDF

41.3 KB Created: 2021-05-13 09:23:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 081d993bec743c57a3e733085a4ee41a SHA-1: f903de9342e3d2a2b0ef337c282e81b530cb0128 SHA-256: 3685b0c1c91ea35813f1f46965fbf84fe6082cde68aebe3b452e4704c014c30b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 https://netcdn.xyz/app/406889139/coin-master-free-spins-heaven-game-hack PDF link annotation
    • https://jdlgroup.ca/images/coin-master-hack-version_GM406889139.pdfIn PDF document text
    • https://jdlgroup.ca/images/hack-xp-net-coin-master_GM406889139.pdfIn PDF document text
    • https://jdlgroup.ca/images/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://jdlgroup.ca/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://jdlgroup.ca/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://jdlgroup.ca/images/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://jdlgroup.ca/images/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://jdlgroup.ca/images/minecraft-items_GM479516143.pdfIn PDF document text
    • https://jdlgroup.ca/images/free-roblox-codes_GM431946152.pdfIn PDF document text
    • https://jdlgroup.ca/images/free-coins-for-flip-master_GM406889139.pdfIn PDF document text
    • https://jdlgroup.ca/images/hack-coin-master-dzooka_GM406889139.pdfIn PDF document text
    • https://jdlgroup.ca/images/coin-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://jdlgroup.ca/images/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
    • https://jdlgroup.ca/images/noob-vs-pro-vs-hacker-vs-god-minecraft_GM479516143.pdfIn PDF document text
    • https://jdlgroup.ca/images/roblox-com-r_GM431946152.pdfIn PDF document text
    • https://jdlgroup.ca/images/how-to-sue-roblox_GM431946152.pdfIn PDF document text
    • https://jdlgroup.ca/images/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • https://jdlgroup.ca/images/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://jdlgroup.ca/images/how-to-get-free-robux-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
stream_003_off000048f9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48F9 24312 bytes
SHA-256: 092db93b899c0236ba465dc720865bceb3adcc91476cbd597d18bda450b710e3
font_01_sfnt_off00007fa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA9 18000 bytes
SHA-256: 1a7a942824b06f750bb78f0ac6c20b575c890bd3bb0b70b48d1c99cd2ce212d3