Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe0513b6270ea1dd…

MALICIOUS

PDF

42.1 KB Created: 2021-05-16 22:20:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 27c2dc251a0cd8b5f3e6cdb1509a3b04 SHA-1: bd85087fc74832bbd4e04dba62c4e67cb2f53b18 SHA-256: fe0513b6270ea1dda297db08ebbf75c196c455b263c848ad6de00f2f1017e0d7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'Roblox Cheat Robux' and similar game-related lures. The ML classifier strongly flagged this PDF as malicious, and heuristic rules identified it as a redirector link designed to lure users. The document body and embedded URLs confirm the social engineering pretext of offering game hacks or currency.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/roblox-cheat-robux-game-hack In PDF document text
    • http://www.kendo.gr/images/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.kendo.gr/images/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://www.kendo.gr/images/how-to-make-a-minecraft-server-for-free-java_GM479516143.pdfIn PDF document text
    • http://www.kendo.gr/images/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.kendo.gr/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.kendo.gr/images/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://www.kendo.gr/images/robux_GM431946152.pdfIn PDF document text
    • http://www.kendo.gr/images/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://www.kendo.gr/images/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://www.kendo.gr/images/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://www.kendo.gr/images/coin-master-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://www.kendo.gr/images/100-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://www.kendo.gr/images/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.kendo.gr/images/can-i-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.kendo.gr/images/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://www.kendo.gr/images/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • http://www.kendo.gr/images/free-robux-today_GM431946152.pdfIn PDF document text
    • http://www.kendo.gr/images/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://www.kendo.gr/images/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • http://www.kendo.gr/images/hack-coin-master-app_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
stream_003_off000047e7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47E7 24988 bytes
SHA-256: bb1842acf3f12a84ebfeb29bb9601085fcb8dfecc528b7b2413a4c6a8331d373
font_01_sfnt_off0000818a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x818A 18424 bytes
SHA-256: a96f43e65daf9623fa7b9bc259dd656765653644365f0d7d49582fe5e9502473

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