Malicious PDF — malware analysis report

Static analysis result for SHA-256 46140094efeb5ea8…

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 08:14:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: fc45ecd66b0732b0b27f3d227159c51d SHA-1: df01e7838af931af4ddbabac1dd8ddef08bd478e SHA-256: 46140094efeb5ea8698d7f4fe1966cf80dbbfd26ef939ffc33bac91bb0e7d30a
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/431946152/roblox-bux-free-game-hack PDF link annotation
    • http://pustaka.fateta.unand.ac.id/repository/minecraft-hack-ios_GM479516143.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/cute-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/roblox-hacking-software-free-download_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/coin-master-free-spins-a2z-help_GM406889139.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/coin-master-free-coins-cheat_GM406889139.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/robux-come_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/woman-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/rbx-sites_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/how-to-get-free-robux-on-roblox-app_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/coin-master-hacks-for-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/minecraft-images-free_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
font_00_sfnt_off00002fbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FBB 22320 bytes
SHA-256: ec3c2512802a3c80885e7bba882c72736ac0c89e4eee7c1de6660865ab828f5b
font_01_sfnt_off00006166.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6166 18788 bytes
SHA-256: fbab28d7f6e5a424fa162c67bd0527d854af59c09f66b1d36dcf755703a8e09e

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