Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f8be8bb79539d67…

MALICIOUS

PDF

35.4 KB Created: 2021-06-18 04:10:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 272db9e157a8928ffbf57f2c6ba8e64e SHA-1: 6c27b1908d216330fb06dd96b7eabcfd196bd097 SHA-256: 4f8be8bb79539d67465f3aad23557b6e2b7174e284efa6200fdf1feb9dd9f68e
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.co/app/431946152/deadmist-2-roblox-spawn-hack-game-hack PDF link annotation
    • http://himalayandiscoverytrek.com/userfiles/files/get-free-robux-info_GM431946152.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/coin-master-hack-apk-download-latest-version_GM406889139.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/minecraft-skins-download-free_GM479516143.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/coin-master-free-spins-5-10-2021_GM406889139.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/daily-free-spins_GM406889139.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/coin-master-hacks-iphone_GM406889139.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/abd-roblox_GM431946152.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/coin-master-free-spins-and-coins-app_GM406889139.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/how-to-get-free-coins-and-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/coin-master-hacks-that-work_GM406889139.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/coin-master-level-3_GM406889139.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/robux-online_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_off0000301f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x301F 22564 bytes
SHA-256: 278bf898a1d0cb81abb8b3d743bb653e74a8d593f17d16329b242c0c7ce2f323
font_01_sfnt_off00006270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6270 19948 bytes
SHA-256: a6174d8cea977d4e8fd6758fb62f8bf9d5aefc7eb1b1d7d201b73d2742e07f3d

Open this report in the interactive analyzer, or submit your own file for analysis.