Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cffa1e61a4fefaa…

MALICIOUS

PDF

29.7 KB Created: 2021-06-28 06:42:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 50b2248d8534a62979be9de6bcad99e5 SHA-1: 988b9984fff09ece272f3cfe5a1bc886114701c5 SHA-256: 0cffa1e61a4fefaaf34f304dd82f908eb8c73d101319cc0a779cc9ebf1f287d9
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The ML classifier strongly indicated maliciousness, and the heuristic firings confirm the presence of malicious redirector links. No scripts were extracted, but the document body and embedded links clearly indicate a lure for users to visit potentially harmful sites.

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/hack-para-roblox-2021-game-hack In PDF document text
    • https://www.tdbaska.hr/files/hacks-roblox_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • http://www.tdbaska.hr/files/how-to-get-free-robux-july-2021_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • https://www.tdbaska.hr/files/robux-hack-2021-working_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/como-hackear-robux-a-un-amigo_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • https://www.tdbaska.hr/files/tiradas-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/hack-robux-youtube_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/free-tiktok-app_GM835599320.pdfIn PDF document text
    • https://www.tdbaska.hr/files/free-promo-codes-for-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • https://www.tdbaska.hr/files/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • https://www.tdbaska.hr/files/roblox-lumber-tycoon-2-free-money_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/how-to-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.tdbaska.hr/files/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/roblox-piano-keyboard-hacks_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E4B 23144 bytes
SHA-256: dd42dd4d6c98c51fffd4f8f7e89e7ac24d52bb9b30789b4c4dda8efc7caa96b9

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