Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5f9edc3633f53fa…

MALICIOUS

PDF

35.0 KB Created: 2021-06-19 07:17:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 899a0588888bc7e268607cd360200b18 SHA-1: 7419dcb71e1857f0331efec44d59a77e7316a105 SHA-256: e5f9edc3633f53fa346b6dcc8230e618ba39e09f40cd0712537701297953dbda
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with game hack content. The document body explicitly mentions 'Como Descargar Hack Para En Roblox' and includes a call to action to access a 'ROBLOX GENERATOR UL'. This indicates a phishing or scam attempt designed to trick users into visiting malicious sites. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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/como-descargar-hack-para-en-roblox-game-hack In PDF document text
    • http://bgnails.nl/images/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/minecraft-for-ps3-free_GM479516143.pdfIn PDF document text
    • http://bgnails.nl/images/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/roblox-free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/how-to-bring-in-to-roblox-school-hack_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/roblox-free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://bgnails.nl/images/best-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://bgnails.nl/images/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • http://bgnails.nl/images/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-robux-site_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/how-to-hack-100-type-in-roblox_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_off000030c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C4 22884 bytes
SHA-256: 6844957f0a591054fdbcb83140c52dae65da0b3a9da70d0492fdac3eff4d8e1a
font_01_sfnt_off000063c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C6 19052 bytes
SHA-256: 9fba510d34f1be29d8f799db3f8a725fc1c56b3a25550610c099d64359c3880c

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