Malicious PDF — malware analysis report

Static analysis result for SHA-256 0591fb846530c56b…

MALICIOUS

PDF

36.0 KB Created: 2021-06-27 04:59:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d30ecf3f72afdbf46bffafd86324cbe0 SHA-1: a98c6ce5858b5760bad2b317097abde040769056 SHA-256: 0591fb846530c56bec5efd5ce2bcfd598c25f9bf24e99e6608aebebf0c82b517
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on what appears to be a game hack or generator. These links redirect to known malicious infrastructure, indicating a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is part of a malicious campaign.

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/how-to-get-free-hats-and-gear-on-roblox-game-hack In PDF document text
    • http://battistibrothers.com/system/userfiles/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/goo-recording-for-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/roblox-avatar-editor-free_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/giving-people-free-robux_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/coin-master-free-spin-sites_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/how-to-make-a-minecraft-client_GM479516143.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/how-to-hack-robux-2021-on-ipad_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/robux-free-co_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/tiktok-free-download-for-iphone_GM835599320.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/free-robux-link_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/how-to-hack-mcpe-master-coins_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/coin-master-free-coins-and-spins-today_GM406889139.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_off0000353c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x353C 22576 bytes
SHA-256: 6c4209049289ba3a561569f035b9c30221041bf0f955c8550d56e5a710eef69d
font_01_sfnt_off000067a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67A0 19092 bytes
SHA-256: dc922fccf1b87c65796797b7c7ea96f2a9e06b2161ad2fd9d8a1ba4b5ee3aea2

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