Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff3d04a25489fe4e…

MALICIOUS

PDF

33.1 KB Created: 2021-06-18 08:19:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: e8a42b68ef43d9ad7c807115603cbaac SHA-1: 90b72357e1702fa10f088b7e93afb33721fc246b SHA-256: ff3d04a25489fe4e4ae804b753ac4b0e83eae1e2efca069e7783882e38d647c8
160 Risk Score

Malware Insights

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

This PDF document contains multiple links to known malicious redirectors and scam websites, specifically targeting users interested in 'free Robux' or game hacks. The heuristic firings indicate a lure designed to redirect users to potentially harmful content, likely as part of a phishing or scam campaign. While no scripts were directly extracted, the nature of the embedded links and the ML classifier's high confidence suggest exploitation for client execution.

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-scams-prank-game-hack In PDF document text
    • https://www.manmed.info:443/images/promo-codes-for-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/nija-legend-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/microsoft-rewards-robux_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-web-site-2021_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-roblox-builders-club-code-generator_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/giftrobux-com-generator_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/is-roblox-free-on-switch_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/paste-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-spins-in-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/roblox-free-items-glitch_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/apps-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/www-rbxhut-com_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_off00002e3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E3D 21184 bytes
SHA-256: 0044ff677d2acc78ded3abf02c3c03132a59842c84fa11c6ee36633a3374c07a
font_01_sfnt_off00005c60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C60 19116 bytes
SHA-256: 127d9213e47159362440562d80831bbe953ac41d2cd0255fe8c6d9c23ea5e7a6

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