Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a25caee2f7bd132…

MALICIOUS

PDF

42.6 KB Created: 2021-04-28 06:30:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ba9de7e553ca949a42599e5d16bdb566 SHA-1: 29e452f03d32d9b7d13322ff10721676ec620cc6 SHA-256: 8a25caee2f7bd132020ab32395374e9d4e6c79b5721da98b22b81084f74f920c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and generators. The document body includes a call to action to 'CLICK HERE TO ACCESS ROBLOX GENERATOR', reinforcing the lure. The presence of multiple redirector links and the ML classifier's high confidence score indicate a malicious intent to lead users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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/hack-de-carpeta-atravesar-paredes-roblox-game-hack In PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-dex-explorer-hack.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-mineverse-hack.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/2021-free-robux-hacks.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/https-www-blox-land-free-robux.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-bot.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-password-hacker-2021.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-get-free-robux-without-human-verification-or-download.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/zombie-attack-roblox-hack.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-get-free-robux-on-a-computer-safely.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-roblox-cards-for-100.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_off00004380.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4380 27564 bytes
SHA-256: 49009106e124281c9ea23877529a32d666471e075aafa3d7759ce89ccaed4518
font_01_sfnt_off0000823c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x823C 19072 bytes
SHA-256: f07c34d222a53637982e03f50b5c115fac19bba5fea3c5bf44b0c8ac45b9e604

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