Malicious PDF — malware analysis report

Static analysis result for SHA-256 10d15e9486367b6f…

MALICIOUS

PDF

34.6 KB Created: 2021-07-07 17:42:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 44d942ce8c843bebacf4d53b45ec39dd SHA-1: 742373542a426220de44e442eb2a5c8e1dbeea9a SHA-256: 10d15e9486367b6ff341d4ee043a468f3092e91057b2f4b22f76069ba200b73e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and generators, directing users to a known malicious redirector. The embedded URL, http://netcdn.tw/app/431946152/how-to-hack-skywars-roblox-game-hack, is a primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest a malicious redirector workflow designed to lead users to potentially harmful content or further malware downloads.

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/431946152/how-to-hack-skywars-roblox-game-hack In PDF document text
    • https://fridaytravelnepal.com/userfiles/files/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-hack-download-android_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/master-coin-hack-game_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-have-free-robux-in-roblox_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-free-play-now_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/is-there-any-tricks-or-working-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-hack-generator-inpect_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-spins-and-coins-app_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-app-free-download_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-roblox-generator_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-hack-roblox-accounts-2021-android_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/oginject-co_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-35-16-hack-apk_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/can-you-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-get-free-bc-tbc-obc-and-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/code-cheat-roblox-to-chat_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000311f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x311F 22348 bytes
SHA-256: 9ac70ea29ba7e1dc4e7bfe9989997ab27d890a2d28a41a9f509237725af9c391
font_01_sfnt_off000062ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62BA 18812 bytes
SHA-256: a72513c334daac2b6dce299a09ec454f8ba76f3505c905705efb8a01a2c4f5cc

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