Malicious PDF — malware analysis report

Static analysis result for SHA-256 7822a7afe3a0127b…

MALICIOUS

PDF

41.1 KB Created: 2021-05-21 01:19:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-16
MD5: 877cf4e8dedc85f7b5428835fde56fa8 SHA-1: 5a4ba60f44ee13c68368362127ba5449e7b2809d SHA-256: 7822a7afe3a0127bc3358d18b9046a7273e1c3c4400d9313968820a55ff23435
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7407

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-piano-hack-game-hack In PDF document text
    • http://htbrasil.net/ckfinder/userfiles/files/pokemon-go-free-quickest-charge-moves_GM1094591345.pdfIn PDF document text
    • http://htbrasil.net/ckfinder/userfiles/files/free-roblox-clothes-boy_GM431946152.pdfIn PDF document text
    • http://htbrasil.net/ckfinder/userfiles/files/spin-coin_GM406889139.pdfIn PDF document text
    • http://htbrasil.net/ckfinder/userfiles/files/robux-sign_GM431946152.pdfIn PDF document text
    • http://htbrasil.net/ckfinder/userfiles/files/coin-master-fan-page-giveaway_GM406889139.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_002_off00003073.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3073 28048 bytes
SHA-256: 3e7fd4c00187c12b7e92515199acb250409d969d953c06ac669ddc9bc1bc4169
font_01_sfnt_off000071dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71DC 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00007eee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EEE 18456 bytes
SHA-256: b3a5bdafa913fbeb08409da0979c792cb3491f79dd739ad0ffcb7a8a40d00987

Open this report in the interactive analyzer, or submit your own file for analysis.