Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2e936280212bab7…

MALICIOUS

PDF

44.4 KB Created: 2021-06-03 13:31:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 106b14a29ab36b2e76a4ec0ffb29e04e SHA-1: ead01478d19c78af9ed356efbc08d7f6572d4338 SHA-256: b2e936280212bab7f6ae4fdcbea3237bfc5d5d5b9c2b231e1083dabe283263c5
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 0.9865

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/431946152/free-roblox-hack-us-game-hack PDF link annotation
    • http://opac.disarpus.surakarta.go.id/repository/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/roblox-rewards-robux_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-free-spins-link-without-human-verification_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-minecraft-skins-pc_GM479516143.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/daily-free-spins_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/robux-com-free_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-invite-friends-free-spins_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/robux-withdraw_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/best-way-to-hack-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_004_off00005040.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5040 25160 bytes
SHA-256: e4d4e9b564f5c26901f6f6374b04686feb27b539869ce4aed337c1303257700f
font_01_sfnt_off00008a4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A4A 18532 bytes
SHA-256: 0d34e375d8902d3efa285fd24fab142d003833d4205c7dc9a730d4d831678389

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