Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8cfb6d08ca572db…

MALICIOUS

PDF

49.2 KB Created: 2021-05-14 22:04:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b94ee26eca41a40d883f2f28ae3f51ed SHA-1: a1c51e3d847468c71557de1b60768f3d01ad78e8 SHA-256: e8cfb6d08ca572db65e4696a5061472fc036e25d88c6f353ed7a24ccacaf8e75
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a visual call-to-action, suggesting an attempt to trick users into downloading malicious files. The ML classifier also flagged this PDF as malicious. The primary URL, https://netcdn.xyz/app/431946152/roblox-download-pc-free-game-hack, is likely the intended destination for the payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9228

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-download-pc-free-game-hack In PDF document text
    • http://www.my-travel.com.hk/upload/files/_GM479516143.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/blox-fun-info_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/2021-no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/lazyblocks-com-robux_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004916.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4916 33300 bytes
SHA-256: 084da6d3641e7c297c6cbf300da6eef289fef2088c103566d8dfe66bef90a4ca
font_01_sfnt_off0000923c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x923C 2884 bytes
SHA-256: fdc7bf3741fe5982410373533393336ab00d067847e04259bd6ea017bbab8605
font_02_sfnt_off00009c35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C35 18836 bytes
SHA-256: 335401c7e69d4718b9355a16245a633da97680606d3b3322095c59b658246ecd