Malicious PDF — malware analysis report

Static analysis result for SHA-256 859072fe38480bc0…

MALICIOUS

PDF

29.6 KB Created: 2021-06-18 08:56:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 06e03216e37d31c5376c7307ce6f3ab7 SHA-1: 03b91bbc664c1b47270f96cde4e7211546c06008 SHA-256: 859072fe38480bc05223a881f5b9d1ed236af3e13b6895020a24850bf8729189
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generators' and 'game hacks' for popular games. The ML classifier strongly indicated maliciousness, and the embedded URLs are known to be associated with malicious redirectors. The document body, though partially corrupted, contains references to these lures and the wkhtmltopdf application, suggesting it was generated programmatically to host these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 3

  • 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.
  • 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/roblox-render-free-to-use-game-hack In PDF document text
    • http://gruporamos.do/images/roblox-speed-and-jump-hack_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://gruporamos.do/images/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://gruporamos.do/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://gruporamos.do/images/minecraft-windows-10-hack-client-2021_GM479516143.pdfIn PDF document text
    • http://gruporamos.do/images/free-robux-zephplayz_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/wurst-client-download_GM479516143.pdfIn PDF document text
    • http://gruporamos.do/images/a-game-that-actually-gives-free-robux_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/cool-free-green-shirts-roblox_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://gruporamos.do/images/how-to-hack-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • http://gruporamos.do/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/how-to-make-your-own-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://gruporamos.do/images/best-free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/50-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://gruporamos.do/images/mega-hacks-roblox_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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002eb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EB0 22304 bytes
SHA-256: a78a7f621eb22b4c11d48529740aeeb7c3f1d777827871116306ba4f5eb8f4ba

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