Malicious PDF — malware analysis report

Static analysis result for SHA-256 22c4508fb705be79…

MALICIOUS

PDF

34.5 KB Created: 2021-06-26 22:19:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 219e173f4d5a59e7ae1bc29aa7b7cf6c SHA-1: c795e34f5201044af4700f62f486a26db6331d6e SHA-256: 22c4508fb705be79444e2c6ddf981c3d7efcb8d5fd6ad43fde89ad845b2d5870
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a prominent link disguised as a game hack download, which is a common lure for malicious content. The ML classifier strongly flagged this PDF as malicious, and multiple heuristics identified the link as a game hack redirector. The document body contains numerous related URLs, reinforcing the theme of obtaining free in-game currency or cheats.

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.co/app/431946152/artmoney-roblox-admin-hack-game-hack PDF link annotation
    • http://library.umuslim.ac.id/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/i-finally-found-a-game-that-gives-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-speed-hack-code-2021_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-minecraft-svg-cutting-files_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-cheap-hack-buy_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-assassin_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/watch-ads-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-roblox-mod-menus_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/can-u-earn-free-robux-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-free-spin-27_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-free-spin-and-coin-link-haktuts-hacking-news_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_off00002efc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EFC 22224 bytes
SHA-256: 56905fc7e8ff59089a50e23bc53e2ac2e6a0ed120ef63fb09a70a993b554e309
font_01_sfnt_off0000604a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x604A 19492 bytes
SHA-256: 31bb7e0af5e5f36b40fe1e3bba042518ce28b91f619fa0126a63ce9849481d30

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