Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c654941beddae50…

MALICIOUS

PDF

49.0 KB Created: 2021-05-14 11:04:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8acfba630f86a6a4f5db15f0c3f4e095 SHA-1: c8f101df1756b549a041ae9a937ed3a52f858871 SHA-256: 4c654941beddae509ad62cd31bf9b874a842700bbef36dd1629021cf3145df60
160 Risk Score

Malware Insights

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

The PDF contains multiple links to known malicious redirectors, specifically promoting 'free Robux' or game hacks. The primary malicious URL identified is https://netcdn.xyz/app/431946152/free-robux-real-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering lure designed to lead users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8642

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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.xyz/app/431946152/free-robux-real-game-hack In PDF document text
    • http://beagles-of-harmony.de/images/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/roblox-builders-club-free_GM431946152.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/free-spins-for-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/free-robux-today_GM431946152.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/coin-master-35-2-hack_GM406889139.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/robux-offer-wall_GM431946152.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/httpswwwurcouponsdealcom202103coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/free-spins-coin-master-links-twitter_GM406889139.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/coin-master-free-spin-and-coins-links-home_GM406889139.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/free-daily-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049db.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49DB 26276 bytes
SHA-256: 29a96b60c5e6440564037662b2c2151690540e00f7f097f56d90737ec32e7482
font_01_sfnt_off000085ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85FF 2824 bytes
SHA-256: bd082aa73fbb1a8b3bd2e5c998d3d8e31d1dfc71ea36f846af746f69a0d2ab7f
font_02_sfnt_off00008fad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FAD 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_03_sfnt_off00009cbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CBF 18316 bytes
SHA-256: 0bff543ee19f4ca1641aaad3399cdc0a52c610caf2abd08cd8655404047fbeff

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