Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a60dec5c0f115b6…

MALICIOUS

PDF

42.5 KB Created: 2021-06-03 17:50:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: a2d69034b2cc11f961aa72048c7fa59b SHA-1: aabfc15a26b2a6ffe695bb1baac7034f19336db2 SHA-256: 9a60dec5c0f115b690be9b7f2a57a2ff1d9c88df0b8f2b69903871314af5c06e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a high-severity heuristic indicating it links to a 'free generator / game hack' redirector, specifically https://netcdn.online/app/406889139/free-coin-master-spin-app-game-hack. This lure is designed to trick users into downloading a second-stage payload. While no scripts were explicitly extracted, the nature of the lure and the embedded URLs suggest a phishing or social engineering attack aimed at delivering malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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 https://netcdn.online/app/406889139/free-coin-master-spin-app-game-hack PDF link annotation
    • http://www.denpasarkota.go.id/new/public/ckfinder/userfiles/files/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://www.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-mobile_GM406889139.pdfIn PDF document text
    • http://denpasarkota.go.id/new/public/ckfinder/userfiles/files/minecraft-tower-defense-hacked_GM479516143.pdfIn PDF document text
    • http://denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • http://denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://www.denpasarkota.go.id/new/public/ckfinder/userfiles/files/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://www.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://www.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://denpasarkota.go.id/new/public/ckfinder/userfiles/files/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://denpasarkota.go.id/new/public/ckfinder/userfiles/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • http://denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-link_GM431946152.pdfIn PDF document text
    • http://denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
    • http://denpasarkota.go.id/new/public/ckfinder/userfiles/files/pubg-uc-zing_GM1330123889.pdfIn PDF document text
    • http://denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://denpasarkota.go.id/new/public/ckfinder/userfiles/files/minecraft-dungeons-free-download_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
stream_004_off00004c7a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C7A 24384 bytes
SHA-256: ecdd4523697d50835a67e727ca4f22e7955f9d1177b2a29b8b1ca30ae7489c71
font_01_sfnt_off0000847d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x847D 17884 bytes
SHA-256: 6a5fc0e5ee3990f98fff047e5d02c1443490e61ce795861dff478bab25fb071a

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