Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c9678092d302255…

MALICIOUS

PDF

35.4 KB Created: 2021-07-07 17:27:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 156ab8b83dc907c2a4182adb57cb0de4 SHA-1: 562fca264b31adda8b624c50b81f578d8e63edff SHA-256: 8c9678092d302255492421877e3ec4fdb0e498123e5a2fd9d78cfa94b7c3c485
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks to trick users into clicking malicious links. The primary link, http://netcdn.tw/app/406889139/hack-coin-master-android-game-game-hack, is identified as a game hack redirector. While no scripts were directly extracted, the PDF structure and embedded URLs suggest a malicious workflow designed to lead the user 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 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 http://netcdn.tw/app/406889139/hack-coin-master-android-game-game-hack PDF link annotation
    • http://perpustakaan-stikesmsb.com/repository/roblox-hack-download-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-robux-no-password-or-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/roblox-minecraft-game-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/hackear-server-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/robux-free-co_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/shiny-charmander-easy-in-pokemon-brick-bronze-without-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-draw-youtube-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-no-sign-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/how-to-hack-roblox-account-with-inspect-element_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/working-cheat-engine-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-links-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-unlimited-spins-apk-free-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/rpg-simulator-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/roblox-catalog-admin-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-coin-app_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/good-hacker-names-for-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/codes-to-get-free-robux-may_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-robux-hack-2021-march_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
stream_002_off00003003.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3003 24196 bytes
SHA-256: 20bbe6252fdbf312d418bab6dac536c276aaf8d5bf298cafefe664639762e174
font_01_sfnt_off00006719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6719 18436 bytes
SHA-256: c9efc8e8361dabb7440869310d47c8a3e17327798eea6a0660a8d45056159a40

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