Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8c2210ce218c268…

MALICIOUS

PDF

35.4 KB Created: 2021-06-29 19:58:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: daa90453dd6588914c87a302f21c5ef5 SHA-1: af64dd4e4aa4d75a33354559f6cd2fe589635f05 SHA-256: e8c2210ce218c268680285a8069bab459e1938e65b3a2f28147fbdb53a6e8f06
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/mistplay-hack-robux-game-hack PDF link annotation
    • http://foo.com.tw/files/free-builders-club-roblox-2021_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/minecraft-svg-images-free_GM479516143.pdfIn PDF document text
    • http://foo.com.tw/files/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/roblox-war-tycoon-cheats_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/pokemon-go-free-eggs_GM1094591345.pdfIn PDF document text
    • http://foo.com.tw/files/minecraft-bedrock-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://foo.com.tw/files/minecraft-switch-free_GM479516143.pdfIn PDF document text
    • http://foo.com.tw/files/roblox-robux-hack-free-download-2021_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/robufree-club-free-robux_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/hack-roblox-game_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/free-robux-no-siging-i-n_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/tiktok-free-gift_GM835599320.pdfIn PDF document text
    • http://foo.com.tw/files/coin-master-hack-tuts_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/free-robux-claim-generators_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/bloxburg-hack-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/how-to-become-a-vip-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/how-to-get-free-food-for-foxy-in-coin-master_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/roblox-microsoft-rewards_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_off000030c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C1 22828 bytes
SHA-256: 88700f095d15f1f8c8e9944c1e3631fe3b9a4ff033cb816f1d8660dee78b93b6
font_01_sfnt_off000063c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C1 19572 bytes
SHA-256: 5a243645c087765b7d0dea152f60cc0c5989297c53c400c37fb2c3b7c309d452