Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b131c86dd33b23e…

MALICIOUS

PDF

35.6 KB Created: 2021-06-18 16:26:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d80245117aafe901218a97976226f29f SHA-1: 231704c118452dcabfbb90ce2b4105ed2cf9852a SHA-256: 0b131c86dd33b23ebae5ece0a81292e2b8c576d60a95b8157ad15ad5a157d292
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering 'free generators' and 'hacks' for popular games, identified as a lure for malicious activity. One critical heuristic specifically flagged these links as pointing to known malicious redirector infrastructure. The document body and embedded links suggest a phishing or scam attempt designed to trick users into visiting potentially harmful sites.

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/free-roblox-banned-accounts-game-hack In PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-hack-no-root_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-coin-master-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/make-free-robux_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/roblox-hack-for-life-in-paradise_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/synapse-roblox-hack-ddl_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-roblox-wings-2021_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-tiradas-gratis-link_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/minecraft-java-free-download_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off00003460.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3460 22296 bytes
SHA-256: 98647a42e4bbdddc329c0094f7930b6699d8f0c79c0f10ed5daf585444a460c6
font_01_sfnt_off000065ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65EA 19068 bytes
SHA-256: bcaded30c058ca8bba9d31fee33f310a1ad8bc9c7f1047415ac484f071a48aed

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