Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac18d634a65849de…

MALICIOUS

PDF

35.3 KB Created: 2021-07-09 17:20:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2be60427b2c3787270b799c037a8c36d SHA-1: 88977f2565d502860c83226c95d5539b02fecb90 SHA-256: ac18d634a65849decfac5c4eca4f411886dc839d36a8e89cc56178ef81a002af
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/835599320/get-free-tiktok-followers-game-hack PDF link annotation
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/win-free-robux_GM431946152.pdfIn PDF document text
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/free-promocodes-roblox-body_GM431946152.pdfIn PDF document text
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/how-to-get-free-robux-game-link_GM431946152.pdfIn PDF document text
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/free-avatar-items-roblox_GM431946152.pdfIn PDF document text
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/roblox-free-models_GM431946152.pdfIn PDF document text
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/pubg-uc-94fbr_GM1330123889.pdfIn PDF document text
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/how-to-get-free-robux-working-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/free-clothing-items-on-roblox-xbox-one_GM431946152.pdfIn PDF document text
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/2021-free-robux-hacks_GM431946152.pdfIn PDF document text
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/easy-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/a-wolf-or-other-roblox-otter-space-cheats_GM431946152.pdfIn PDF document text
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/coin-master-free-spins-fb_GM406889139.pdfIn PDF document text
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • https://www.bbc.com/news/world-asia-china-46803909In 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_off0000358d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x358D 22476 bytes
SHA-256: 5981050937d56021d6f76bbd46f1b0b7f5cab861a41d7611389941d1c21e4438
font_01_sfnt_off00006794.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6794 18208 bytes
SHA-256: d6dc0fe96375bf479973c15f4dc80cb5149eb13cbf7121a6896fdf070428f5c7

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