Malicious PDF — malware analysis report

Static analysis result for SHA-256 c00ba30fed12320f…

MALICIOUS

PDF

35.1 KB Created: 2021-07-09 18:01:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 41c67432c6ef90b43c890000f7d3747e SHA-1: 21aa9b7a40bff684a9f650d18d24899886821189 SHA-256: c00ba30fed12320fb2967ff39f4b9797c8ef6a34aaa0bc093271cdf8c363261e
82 Risk Score

Malware Insights

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

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/javascript-free-robux-game-hack PDF link annotation
    • http://www.siahotel.com/userfiles/files/get-free-robux-right-now_GM431946152.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/how-to-get-free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/tiktok-follower-bot-free_GM835599320.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/minecraft-pe-017-0-apk-free-download-android_GM479516143.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/cheat-roblox-lumber-tycoon-2-money-2021_GM431946152.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/robux-free-2021-hack-pc_GM431946152.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/robux-free-online_GM431946152.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/how-to-get-free-robux-in-minutes_GM431946152.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/group-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/coin-master-game-hack-apk_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_off00003162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3162 22352 bytes
SHA-256: f30edc1249299bd9aa213ab4fb79705d81dfeea2d1ebb16874dd257ba289b4ad
font_01_sfnt_off000062fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62FE 19396 bytes
SHA-256: 8082ed7272a1262ff2ef05dc2b92dbfce3456c02539d76afbac634f6d087bf75

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