Malicious PDF — malware analysis report

Static analysis result for SHA-256 0522690f61341b65…

MALICIOUS

PDF

35.4 KB Created: 2021-06-29 17:00:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 41784fccb149ccfbb3986532ff81657f SHA-1: 376278ed895ae58a236f53b670f3a7b094d4ad07 SHA-256: 0522690f61341b6592c146994ba7521f25df2c9a8775190c5868264d4828e3a7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and free in-game currency to trick users into clicking embedded links. The primary link, http://netcdn.co/app/431946152/hacking-roblox-passwords-website-game-hack, is identified as a malicious redirector. While no scripts were extracted, the document's structure and embedded URLs strongly suggest a phishing or social engineering attack, likely intended to lead users to malicious websites or download further malware. The use of wkhtmltopdf suggests the document was generated programmatically, potentially to host a large number of lures.

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.co/app/431946152/hacking-roblox-passwords-website-game-hack In PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/roblox-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/roblox-go-through-walls-hack_GM431946152.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/coin-master-free-gold-cards-link-2021ee-spins_GM406889139.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/roblox-tracker_GM431946152.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/roblox-the-rake-hack_GM431946152.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/free-robux-today_GM431946152.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/quelqun-me-hack-sur-roblox-city_GM431946152.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.onusgroup.co.in/uploaded_files/userfiles/files/mega-cheat-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3058 22792 bytes
SHA-256: 1399fc1a807d6a026c3d820fca1b0cb2aa2ff2a392af519c09527bd4f9b3060d
font_01_sfnt_off00006381.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6381 19572 bytes
SHA-256: 5680d95468f9118e8e27e467a3e538d2d525495e0ecf2450974890d8a263ded7

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