Malicious PDF — malware analysis report

Static analysis result for SHA-256 85c00f8ba493c4b8…

MALICIOUS

PDF

50.8 KB Created: 2021-06-03 08:35:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 525af9e4f62dff271a01d8f644400a0e SHA-1: 11e612034b08ecde80a196223ad2a43a4b780d53 SHA-256: 85c00f8ba493c4b8899a3df8cd4d4260a2d3d1d509ddd3864e8217d842fa6368
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting "free generator / game hack" lures. The document body, though heavily obfuscated, contains references to Roblox and game hacks, reinforcing the lure. The primary malicious action observed is the redirection to a URL designed to deceive users, likely leading to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9713

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.online/app/431946152/roblox-old-avatar-game-hack In PDF document text
    • http://rightlead.com.tw/image/data/files/free-spin-coin-master-link-download_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/how-to-get-free-roebucks-without-verification_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/coin-monster_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/hacks-for-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/best-free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/roblox-verification_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/coin-master-free-spins-and-coins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/all-free-items-in-roblox_GM431946152.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
font_00_sfnt_off00004f53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F53 26556 bytes
SHA-256: 5dc35809304ea42938f8e315e626c520e43c948ccd0e634d85d62b77818e3b40
font_01_sfnt_off00008b3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B3F 3088 bytes
SHA-256: 5d30b323f879eb808f60f9481b57371cb696ec1099dc714b1d081f6c4bfcf15c
font_02_sfnt_off000095f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95F6 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_03_sfnt_off0000a307.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA307 18404 bytes
SHA-256: 3ee04b9976b2778629c251408a788a05adb62cbea0810dca153e44138bd3c832

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