Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f705c5068212147…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 01:04:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8fd619fbb896abb2256c292c84554f8c SHA-1: 17d4384559a519e3547082f2dd80d9533066e13b SHA-256: 1f705c50682121476d30e4dd6502f601ad6833380e9a6e282661230a5cccbde8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/479516143/how-to-download-minecraft-for-free-on-android-game-hack PDF link annotation
    • http://library.feb.unila.ac.id/rfeb/repository/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/pubg-uc-live_GM1330123889.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/best-free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-minecraft-server-hosting-with-plugins_GM479516143.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-adopt-me-how-to-get-free-oers_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/vex0rmillion-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-avatar-free-download_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/best-free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-accounts-for-free-with-robux_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/how-do-you-getv-free-robux_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/boku-no-hero-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/pubg-uc-buy-ksa_GM1330123889.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/legitimate-coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/wizard-life-roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-speed-hack-2021-booga-booga_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/toolbox-apk_GM479516143.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_off00003211.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3211 22608 bytes
SHA-256: c31ace0744a415b5d5c8b7e9c7782a474bed3908f196b323f9ff36c92b5c0721
font_01_sfnt_off00006421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6421 18576 bytes
SHA-256: 533f93ab9dd02e28dde29d6843f0244f722ecb9b3db78d8904ab6a8c57640b5d