Malicious PDF — malware analysis report

Static analysis result for SHA-256 191329a1fbf0aa14…

MALICIOUS

PDF

34.5 KB Created: 2021-07-04 09:50:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-22
MD5: a1f1b0e4e65b81994421b036208446ae SHA-1: f367c6a8788f7dfd0c3151a9b5eaefa9b374a342 SHA-256: 191329a1fbf0aa141581b09a0adb8254204f380caec991cb1a45483e83192896
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-35-16-hack-apk-game-hack In PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/robux-earner_GM431946152.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/roblox-hack-2021-download_GM431946152.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/how-to-get-free-robux-no-joke-2021_GM431946152.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/coin-master-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/coin-master-free-spins-link-2021-twitter_GM406889139.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/fog-removed-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/coin-master-200-spin-link_GM406889139.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/rbx-free_GM431946152.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/crib-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/coin-master-hack-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/coin-master-online-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/10-free-spins-coin-master_GM406889139.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_off0000305f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x305F 22576 bytes
SHA-256: d4a72577afac6bd6876f8f26e93dc0cee4dba6411d70a133197b61d35b97fb45
font_01_sfnt_off0000629e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x629E 18764 bytes
SHA-256: 267d16c1f6225354b417121fb91feb0cd9c81b132307559fe177d71ff5d59714

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