Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9115f9ed0a4d186…

MALICIOUS

PDF

35.5 KB Created: 2021-06-19 11:22:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f734f79586f707066696b1141b47b459 SHA-1: 996a6a887dbe1a78cad6d38f277881376c4ce160 SHA-256: f9115f9ed0a4d18651da372ad87fd2ee700d914d3fd5a205692ac2d2b8036f88
90 Risk Score

Malware Insights

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

The PDF document contains lures for game hacks and free items, directing users to a suspicious URL. The presence of XFA forms and embedded URLs, combined with the ML classifier flagging it as malicious, indicates a phishing or redirection attempt. The primary IOC is the malicious URL used in the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • 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/free-clothes-on-roblox-hack-game-hack PDF link annotation
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/coin-master-daily-free-cards_GM406889139.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/freecoins_GM406889139.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/how-to-get-real-robux_GM431946152.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/free-tiktok-likes-no-survey_GM835599320.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/moonactive-coin-master_GM406889139.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/coin-game_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
font_00_sfnt_off00003346.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3346 22584 bytes
SHA-256: a4aa5e69dc4f2e9bd309138c04939da086dd98eeba437d75093fb4dc11c5bedb
font_01_sfnt_off000065b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65B0 19088 bytes
SHA-256: b5d9d787fa95d1c5c0b3e7a980b5179812c67cf27c44310ae0375637c0497ef0

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