Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c5801be80af7249…

MALICIOUS

PDF

35.5 KB Created: 2021-06-28 03:22:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 066b0ec5e633c561917852342da3c2fe SHA-1: 2bc94661689ae72216405af860228e50ed5f9a92 SHA-256: 9c5801be80af724910071e803488d93aa3b7dde86e64c674c94792417916dadc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it links to malicious redirector infrastructure, specifically advertising a 'game hack' for Roblox. The embedded URL, http://netcdn.co/app/431946152/does-roblox-have-a-built-in-anti-exploit-anti-cheat-game-hack, is flagged as malicious. Although no scripts were extracted, the document's structure and embedded links strongly suggest a phishing or scam attempt to redirect users to potentially harmful content.

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/does-roblox-have-a-built-in-anti-exploit-anti-cheat-game-hack In PDF document text
    • http://www.compusiteinc.com/images/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/multiplayer-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-doge-mask-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/roblox-how-to-get-free-robux-no-hacks-2021_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/roblox-backpacking-hacks_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.compusiteinc.com/images/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-roblox-scripters_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/apk-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/kostenlose-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/coin-master-apk-mod-free-download_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://www.compusiteinc.com/images/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-to-get-free-robux-in-1-step_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-to-get-free-robux-that-works_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/roblox-a380-free-model_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/my/tasksIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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_off0000313a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x313A 22828 bytes
SHA-256: eb49da518142846fa00ce27b0ba5efa57bc602be3580ee2f589eccf367a14a9a
font_01_sfnt_off000064a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A4 19476 bytes
SHA-256: 3a7916c4eb2e0ec5324810ce4b637b3a6a7aadc0f4d98fdb5df393c0136a16db

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