Malicious PDF — malware analysis report

Static analysis result for SHA-256 49c769d48c63e327…

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 12:20:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: f35cd51eeb185bd6c57e85b126b602ab SHA-1: e70496a6bc665a79642531a5f7f23c10d5b9a296 SHA-256: 49c769d48c63e3276060deb821447f4184896d4e185862721cdf3f82115bb293
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-free-spins-promo-code-game-hack PDF link annotation
    • http://fkunismuh.org/perpustakaan/repository/coin-master-free-400-spin-link_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coinmaster-gps-user-review-coinmaster-coin-master-hack-pagedemo-index_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/minecraft-free-reddit_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-do-you-get-free-robux-2021-march_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/robux-place-rewards_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-to-get-more-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/xray-hack_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-apk-mod-hack-download_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-robux-using-lucky-patcher_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-spins-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-robux-no-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
font_00_sfnt_off000030f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F5 22864 bytes
SHA-256: 1b6bad3ef0a81216409c1cb3d606480622cf498bb7df861f646984bed5981b80
font_01_sfnt_off0000644b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x644B 18760 bytes
SHA-256: f19908f223f6d81612d6a2bf6f73a33e849f8235d54350b1f471ed781f00ccd8

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