Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb8e8515aeb31262…

MALICIOUS

PDF

35.6 KB Created: 2021-07-04 11:44:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: a29089bd1a63df6d49eabeff13278e3e SHA-1: 66afe6b4d55261e1733bce640a6283775b4ec912 SHA-256: eb8e8515aeb31262369a5a53d9d63cac21810c67c0a5f9809ee6554dd283b132
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 into clicking malicious links. The primary link, http://netcdn.tw/app/406889139/haktuts-coin-master-free-daily-spins-game-hack, is identified as a known malicious redirector. The document's structure and embedded URLs suggest an attempt to drive traffic to potentially malicious sites, likely for further exploitation or credential harvesting.

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/haktuts-coin-master-free-daily-spins-game-hack In PDF document text
    • http://pustaka.fti.unand.ac.id/repository/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/coin-master-free-spins-ios-app_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/rbx-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/free-spins-coin-master-links-no-human-verification_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-sunglasses-in-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/roblox-how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/como-descargar-roblox-hack-para-pc_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/coin-master-free-coins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-roblox-gams_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/hack-to-kick-out-roblox-players_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-get-free-robux-with-edit-this-cookie_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/cheat-roblox-freedraw_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-roblox-accounts-crack_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/roblox-free-10-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-do-you-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/free-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/roblox-play-games-for-free-descarga_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_off0000324b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x324B 23276 bytes
SHA-256: b6909a099dca16bab537a856526027d5256bdf866e599481fb35dd1acf88c012
font_01_sfnt_off000066ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66BA 18904 bytes
SHA-256: b7f24531c88ef09d261a29b7b412295c42d9b915df36cfe91f545608b0580658