Malicious PDF — malware analysis report

Static analysis result for SHA-256 b08505612f2fd6e3…

MALICIOUS

PDF

43.6 KB Created: 2021-05-12 22:31:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 387eab5ca075029a6b4804df9acaf4a5 SHA-1: 585e4a36e50be662477cee2b2114aa3a2042ff81 SHA-256: b08505612f2fd6e3ce3b64a6fb87b94a18600ec06b0dd9a241577f050a19532b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on "free generator / game hack" or "free Robux" lures. These links redirect to known malicious infrastructure, indicating a phishing or scamming attempt. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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 https://netcdn.xyz/app/431946152/free-robux-roblox-promo-codes-game-hack In PDF document text
    • https://rincondelentrenador.com/images/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • https://rincondelentrenador.com/images/how-to-get-real-robux_GM431946152.pdfIn PDF document text
    • https://rincondelentrenador.com/images/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • https://rincondelentrenador.com/images/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://rincondelentrenador.com/images/coin-master-new-cards-hack_GM406889139.pdfIn PDF document text
    • https://rincondelentrenador.com/images/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://rincondelentrenador.com/images/coin-master-village-3_GM406889139.pdfIn PDF document text
    • https://rincondelentrenador.com/images/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • https://rincondelentrenador.com/images/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://rincondelentrenador.com/images/coin-master-hack-iphone_GM406889139.pdfIn PDF document text
    • https://rincondelentrenador.com/images/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • https://rincondelentrenador.com/images/how-to-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://rincondelentrenador.com/images/blogspot-coin-master_GM406889139.pdfIn PDF document text
    • https://rincondelentrenador.com/images/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://rincondelentrenador.com/images/minecraft-svg-images-free_GM479516143.pdfIn PDF document text
    • https://rincondelentrenador.com/images/unlimited-robux_GM431946152.pdfIn PDF document text
    • https://rincondelentrenador.com/images/robux-no-survey_GM431946152.pdfIn PDF document text
    • https://rincondelentrenador.com/images/free-spin-link_GM406889139.pdfIn PDF document text
    • https://rincondelentrenador.com/images/coin-master-free-spins-link-facebook-page_GM406889139.pdfIn PDF document text
    • https://rincondelentrenador.com/images/give-me-free-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_off00004775.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4775 27860 bytes
SHA-256: 1362a3b9adf41b53dcc80fe014de9192da75c150e7e3c71087f6ba56bcbcc2fd
font_01_sfnt_off00008746.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8746 18676 bytes
SHA-256: 9297a3cb5fba7ca587652f513aa1222127deb04773b45a9c0f6482a9c793d56f