Malicious PDF — malware analysis report

Static analysis result for SHA-256 524d19093d04f4a1…

MALICIOUS

PDF

42.5 KB Created: 2021-05-12 04:08:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 954b17692739dbb8a3dfe8776db3236f SHA-1: ce138b3ab0197c04ad4a06a8949ac67cd7c0809e SHA-256: 524d19093d04f4a1e93c06e96118ca9d94f59f6f96438435fb4dc2a8afa4fbe3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs and a visual call-to-action button, strongly suggesting a phishing or social engineering attempt. The ML classifier also flagged this PDF as malicious with high confidence. The document body, though heavily corrupted, contains references to game-related exploits and a URL, indicating a lure for potentially unwanted or malicious downloads.

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/free-avatar-roblox-game-hack In PDF document text
    • https://eyeonhimalaya.com/userfiles/files/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/coin-master-hack-ios_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/robux-hack-me_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/get-robux-com_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/how-do-i-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/coin-master-hack-app-link_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/free-spins-coin-master-legit_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/coin-master-free-raid-link_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/coin-master-free-gold-cards-link_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_off0000490f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x490F 25980 bytes
SHA-256: 1c0666fca57df248b96a30587f179bc7291d218008b04c21170ab420d294a2b3
font_01_sfnt_off00008349.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8349 18396 bytes
SHA-256: b4dd3c4f3ffdeae702bf7cab5d0e67b2e51f16692fa370b224309c32516adec8

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