Malicious PDF — malware analysis report

Static analysis result for SHA-256 bda19f0eda9a0aa8…

MALICIOUS

PDF

45.7 KB Created: 2021-06-11 01:08:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3d088ee1c9a1665572cf745199df059b SHA-1: 74d283b27db1d3d31de5b45911d6b8763e934be6 SHA-256: bda19f0eda9a0aa866e3c5ea0e8f89516b8ee783ef59f34894c9588186b372bd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting game hacks and free generators. The primary lure directs users to a URL associated with malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at tricking users into visiting malicious sites, likely to download further malware or engage in phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/cheats-roblox-meep-city-game-hack In PDF document text
    • http://www.romento.com/uploaded_files/userfiles/files/minecraft-114-4-download_GM479516143.pdfIn PDF document text
    • http://www.romento.com/uploaded_files/userfiles/files/how-to-get-free-tiktok-followers-without-human-verification_GM835599320.pdfIn PDF document text
    • http://www.romento.com/uploaded_files/userfiles/files/freecoins_GM406889139.pdfIn PDF document text
    • http://www.romento.com/uploaded_files/userfiles/files/how-to-hack-coin-master-computer_GM406889139.pdfIn PDF document text
    • http://www.romento.com/uploaded_files/userfiles/files/free-attacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.romento.com/uploaded_files/userfiles/files/facebook-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.romento.com/uploaded_files/userfiles/files/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.romento.com/uploaded_files/userfiles/files/roblox-free-items-glitch_GM431946152.pdfIn PDF document text
    • http://www.romento.com/uploaded_files/userfiles/files/free-spin-link-coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.romento.com/uploaded_files/userfiles/files/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.romento.com/uploaded_files/userfiles/files/clients-minecraft_GM479516143.pdfIn PDF document text
    • http://www.romento.com/uploaded_files/userfiles/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.romento.com/uploaded_files/userfiles/files/all-game-roblox-admin-gui-hack-working_GM431946152.pdfIn PDF document text
    • http://www.romento.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://www.romento.com/uploaded_files/userfiles/files/pubg-770-uc-hack_GM1330123889.pdfIn PDF document text
    • http://www.romento.com/uploaded_files/userfiles/files/free-robux-site-better-then-irobux_GM431946152.pdfIn PDF document text
    • http://www.romento.com/uploaded_files/userfiles/files/roblox-monster-battle-hack_GM431946152.pdfIn PDF document text
    • http://www.romento.com/uploaded_files/userfiles/files/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
    • http://www.romento.com/uploaded_files/userfiles/files/wurst-112-2_GM479516143.pdfIn PDF document text
    • http://www.romento.com/uploaded_files/userfiles/files/rblx-city-free-robux_GM431946152.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_off0000522e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x522E 25672 bytes
SHA-256: 04635c6e95e694a194baa6436d30a8e98ce95aa7438576c0e6679b2cc3d6c2b6
font_01_sfnt_off00008e07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E07 18952 bytes
SHA-256: 3e9f54f74b921c2a568c4ec95193a1e18eec32834f4d723279a2efee1c82a785

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