Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0f1f89de421e432…

MALICIOUS

PDF

44.3 KB Created: 2021-04-23 12:14:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d1b42a7d7b7e7512601cceed6f9f0b50 SHA-1: cd7dcb468d02cc1e6180b28cb699b57101e04554 SHA-256: b0f1f89de421e4320920239793709facaea1b7b2bea16dfd3c2fa8abcedeca68
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a prominent link disguised as a 'Roblox Free Play Download' and a 'game hack' lure. This heuristic strongly suggests the document is designed to trick users into visiting a malicious URL. The ML classifier also flagged this PDF as malicious with high confidence. The primary IOC is the malicious URL which likely serves as a dropper or redirects to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9868

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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://netsecure.top/app/431946152/roblox-free-play-download-game-hack PDF link annotation
    • https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/get-1-million-robux-free.pdfIn PDF document text
    • https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/devil-roblox-hack.pdfIn PDF document text
    • https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/free-quick-robux.pdfIn PDF document text
    • https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/roblox-knife-capsules-check-cashed-v3-speed-hack.pdfIn PDF document text
    • https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/redem-codes-for-2021-november-for-free-robux.pdfIn PDF document text
    • https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/izuku-midoriya-roblox-free-schop.pdfIn PDF document text
    • https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/roblox-how-to-getting-the-grade-youtubers-for-free.pdfIn PDF document text
    • https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/roblox-free-robux-bot-v3rmillion.pdfIn PDF document text
    • https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/roblox-how-to-get-free-skins.pdfIn PDF document text
    • https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/robux-free-generator-no-survey-legit.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_off000042c7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x42C7 25212 bytes
SHA-256: b35096001c04479e6c300a9273ac4a326e2f311272e2e9927932c6794794d66b
font_01_sfnt_off00007d81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D81 3312 bytes
SHA-256: 40bd8eebcb3a0d68a8646f1930e84f30a44bfa48525263c6c528f0bc1e9c1677
font_02_sfnt_off000088d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88D0 19016 bytes
SHA-256: c25a0e5db017e47b81afb4cf006190d706be8e522aa5e98a20b9b6d796207435