Malicious PDF — malware analysis report

Static analysis result for SHA-256 056f8705d19cec12…

MALICIOUS

PDF

34.2 KB Created: 2021-06-29 10:02:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 2de3c5667a075b1b2024ba55a0a11e55 SHA-1: 92f72348a457434b391fd99f6a1ea8567708267a SHA-256: 056f8705d19cec12af1779d7c502f9548185a76ce63208f559e508ccb7a10d31
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links disguised as 'free Robux' or game hack generators, indicative of a link farm designed to redirect users to malicious sites. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a 'game hack redirect' lure further support this. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to exploit user interest in game cheats to lead them to potentially harmful content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/how-to-get-free-robux-2021-easy-no-inspect-game-hack PDF link annotation
    • http://www.sscs-uae.com/userfiles/files/roblox-clothing-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/free-robux-generator-unlimited-robux-and-tix_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/cheat-codes-for-roblox-pet-simulator_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/hiw-ti-hack-a-roblox-account_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/how-to-not-get-hacked-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/robux-hacks-code-admin-commands_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/youtube-how-to-get-free-robux-on-roblox-jeff-tech_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/cheat-codes-little-mix-roblox-id_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/jailbreak-roblox-code-speed-hack_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/hack-roblox-pour-rcupe-nos-compte_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/free-things-roblox_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/how-to-hack-roblox-death-zone-glitch_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/free-robux-codes-2021-june_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/free-money-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/free-robux-100-no-survey_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/deleting-baseplate-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/honest-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/money-hack-roblox-pastebin-leaderboard_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/games-in-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/como-hackear-cuentas-en-roblox-2021_GM431946152.pdfIn 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_off00002e2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E2C 21960 bytes
SHA-256: fd0c4df21188199b5f24e3967e4ec1d9b5b77b29fca06cbebb250bb39481ec17
font_01_sfnt_off00005e6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E6D 19740 bytes
SHA-256: da426b5ddf5190e0b8e51222f8e7f6f9e49cddc671b74213f97aa95fa47bfbf2

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