Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc10f680784f4b5c…

MALICIOUS

PDF

35.9 KB Created: 2021-07-04 01:24:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 02e5b1019ccf05df4e720e9fe20bc4a7 SHA-1: d0513220055566346cc45a365f8a98b82beaecfd SHA-256: bc10f680784f4b5cfd97492b01b45f8a3b71cde27d27e8d1a6eee05414d429e8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one pointing to known malicious redirector infrastructure. The document body and heuristics indicate a lure for game hacks or free currency, designed to trick users into clicking the malicious link. This likely leads to a second-stage download or further redirection to a phishing or malware site.

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/coin-master-how-to-get-japan-sushi-card-free-game-hack In PDF document text
    • http://library.futureuniversity.com/repository/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-do-you-hack-for-2021000-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/denisdaily-free-robux-website_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-hack-people-and-get-there-robux_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-btools-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-hack-robux-sin-verificacion_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/gameoffice-net-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/apk-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-free-robux-hack-script_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/123-free-robux-is-this-a-hack_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-codes-on-tablet-2021_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-come_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-working-websites-no-human-verification_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_off000035f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35F4 22420 bytes
SHA-256: 9a3cad1efdf6eb0039b31cc8ef7e189b2411faec2ec95b70bfb9d8995ec0c22d
font_01_sfnt_off000067b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67B1 18984 bytes
SHA-256: eeeec89113fe9ffd5234c042272db78e0426ead830ff3aefcc3754689b647ffc

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