Malicious PDF — malware analysis report

Static analysis result for SHA-256 92393e685cf654ff…

MALICIOUS

PDF

33.1 KB Created: 2021-07-04 23:46:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: a2922239aee305518f6ee5b5ac77e2ca SHA-1: 5b1e8478809fccb779a4c738039218286c939253 SHA-256: 92393e685cf654ffbcbb69ea2862f1ba36004ebc1eee4491f723081e5a65c6f1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and generators to entice users. It contains multiple links, including a primary malicious redirector at http://netcdn.tw/app/479516143/free-minecraft-hacks-game-hack, which likely leads to further malicious content. The presence of numerous similar PDF links suggests a campaign distributing malicious documents disguised as game-related cheats.

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/479516143/free-minecraft-hacks-game-hack In PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-robux-working_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/roblox-free-suit-not-deflaut_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/roblox-hack-free-robux-android_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/roblox-tycoon-money-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/minecraft-free-apk-download-016-0_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-minecraft-windows-10-account_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-roblox-money_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/spins-coin-master_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/roblox-rewards-robux_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/descargar-hacks-en-roblox-2021_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-do-you-earn-robux_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/phoenix-backpack-roblox-free_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_off00003176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3176 21172 bytes
SHA-256: 48205b1ea551c411f93c519eb99daaf23e3e13c3b4c7cb1f90681b97ac4f7319
font_01_sfnt_off00005f72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F72 18024 bytes
SHA-256: 8f8fda7ec61391a8021437fea0b23093d98da4680992c9daa6c8728c6d82e4f2

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