Malicious PDF — malware analysis report

Static analysis result for SHA-256 770cc308373eeed4…

MALICIOUS

PDF

36.0 KB Created: 2021-06-19 00:07:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f4184527fba2609856f0fba20e098efc SHA-1: e13e15638f8d431218042eae819fc1e1b2da1687 SHA-256: 770cc308373eeed41621c0e0664b9ea82586725f65c81b36c7b41c449dfa094b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains links that redirect to known malicious infrastructure, specifically advertising 'free Robux' and game hacks. The document body and embedded URLs reinforce this lure, suggesting an attempt to trick users into visiting potentially harmful sites. While no scripts were extracted, the PDF structure and embedded URLs strongly indicate a phishing or scam attempt.

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-robux-and-builders-club-game-hack In PDF document text
    • http://www.compusiteinc.com/images/free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/roblox-free-ninja-animation_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/hacks-and-cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/robux-website_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-game-pack-with-google-play-coin-master_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.compusiteinc.com/images/mcpe-hack-client_GM479516143.pdfIn PDF document text
    • http://www.compusiteinc.com/images/minecraft-complete-handbook_GM479516143.pdfIn PDF document text
    • http://www.compusiteinc.com/images/robux-no-verification_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/black-panther-mask-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/hack-para-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/coin-master-free-spin-and-coins-fbid-links_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/ban-roblox-pour-avoir-hack-des-robux_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
font_00_sfnt_off000035c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35C0 22584 bytes
SHA-256: ccef971f03b9ffe175fd0b36dcc107906b3d0df02186be7e52deb1caf06743e1
font_01_sfnt_off00006873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6873 18900 bytes
SHA-256: c3bbfed86fc07bfa6ab304b6e684ace084cc0666b857837f6341068989f086be

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