Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4a0537a0c197818…

MALICIOUS

PDF

36.0 KB Created: 2021-06-25 02:38:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: afdc20111dfd932606eb9f005b2d1f87 SHA-1: 1ac49d6533afb020e55ec53bc2b0fb020422cb09 SHA-256: f4a0537a0c197818e00d8d4828ec814fc3fb3fc671d8ad6ce832b77863aae451
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and cheats to entice users to click on embedded links. The primary link, http://netcdn.co/app/406889139/how-to-hack-coin-master-using-es-file-game-hack, is identified as a redirector to potentially malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or social engineering attack vector, likely intended to lead the user to a site that downloads further malware or attempts credential harvesting.

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/406889139/how-to-hack-coin-master-using-es-file-game-hack PDF link annotation
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-2021-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/coin-master-real-hack_GM406889139.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/free-robux-stream_GM431946152.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/mangocheats-com-hack-coin-master-cheat_GM406889139.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/free-robux-ad_GM431946152.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/roblox-free-item-codes_GM431946152.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/free-rewards-coin-master_GM406889139.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/coin-master-tips_GM406889139.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/pubg-uc-20210_GM1330123889.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/20-free-spin-link-coin-master_GM406889139.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
stream_002_off00003425.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3425 23376 bytes
SHA-256: 5feeab9367ffe90ad42a2f2e699b11e3f4dbd60d1e1004b29f02cf66ccbdb902
font_01_sfnt_off00006922.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6922 18592 bytes
SHA-256: 9f5be4458162f88b8106d8459438f6a033b33521919b4f61ce35f018954fc42f

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