Malicious PDF — malware analysis report

Static analysis result for SHA-256 7820533d1e117094…

MALICIOUS

PDF

43.0 KB Created: 2021-05-13 01:03:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-16
MD5: e253b559a79ad7610fd3e15d4890baac SHA-1: a5a032baafbf331c497f1c15f5c4df4e6ecb8ed1 SHA-256: 7820533d1e11709452666a818c517f811b016536b113210e6e48f6b1da036957
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/479516143/how-to-get-minecraft-pocket-edition-for-free-game-hack In PDF document text
    • http://armportal.co.uk/images/robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://armportal.co.uk/images/roblox-exploit-scripts_GM431946152.pdfIn PDF document text
    • http://armportal.co.uk/images/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://armportal.co.uk/images/coin-master-hack-version-2021_GM406889139.pdfIn PDF document text
    • http://armportal.co.uk/images/roblox-free-wings_GM431946152.pdfIn PDF document text
    • http://armportal.co.uk/images/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://armportal.co.uk/images/how-to-scam-on-roblox_GM431946152.pdfIn PDF document text
    • http://armportal.co.uk/images/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://armportal.co.uk/images/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://armportal.co.uk/images/does-roblox-premium-expire_GM431946152.pdfIn PDF document text
    • http://armportal.co.uk/images/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
    • http://armportal.co.uk/images/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • http://armportal.co.uk/images/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://armportal.co.uk/images/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://armportal.co.uk/images/free-spin-links-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://armportal.co.uk/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://armportal.co.uk/images/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://armportal.co.uk/images/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://armportal.co.uk/images/coin-master-free-spins-daily-1-ga_GM406889139.pdfIn PDF document text
    • http://armportal.co.uk/images/how-to-get-free-robux-fast_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
stream_003_off00004aee.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AEE 25700 bytes
SHA-256: 8bacffdd953d99e33387cbd7ef9df5e679f251cb35a4fc15600508e59b2fd48a
font_01_sfnt_off00008585.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8585 18372 bytes
SHA-256: 48146c158bc763bc875505d5b271c3d9491fcf22091c9e02863bb81ec9b852cb