Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeb387e541db5e1e…

MALICIOUS

PDF

34.0 KB Created: 2021-07-05 02:31:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b18d05d69fd2bc7bfb57ad286918b04d SHA-1: 12b7baa920288cfb3c42429964003f5693fbd39b SHA-256: eeb387e541db5e1e3fb21ce4a4196d13c30d32611f43b49cb1ed4ddbee0cd78b
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/406889139/coin-master-hack-no-root-game-hack PDF link annotation
    • http://gts.edu.gh/library/repository/how-to-change-my-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-free-accounts-real-obc_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/master-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-roblox-cards-generator-username_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-spins-for-coin-masters_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-roblox-gamepasses-script_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/hack-roblox-boku_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-roblox-exploits-no-download_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/old-roblox-accounts-free_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/lego-hacking-roblox-download_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/pastebin-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/robux-free-hack-2021-agust_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-vocabulary-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/robux-free-gift-card_GM431946152.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_002_off00002f9b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F9B 22888 bytes
SHA-256: 005aed6f1df89c84f6cddd4ae49869ccebdf74ec0e2da9aa4e4860131da314a5
font_01_sfnt_off0000630e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x630E 18004 bytes
SHA-256: 549beb99202183260cec546d87202bf9f33ec82d563d99b2488d726b36bc9bd3

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