Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfdfa3ea3ef817e9…

MALICIOUS

PDF

28.5 KB Created: 2021-05-18 00:00:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2347451b0101cd01ac98427923617a5d SHA-1: 9efb9b9ff56b7a55b11e9108f83631c42725a28e SHA-256: dfdfa3ea3ef817e9583da6c3a37860d05e881c7601e33204827f12f4c8a62a2e
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 'free generator / game hack' lures. The ML classifier strongly indicated maliciousness, and the embedded URLs are associated with known malicious redirectors. No scripts were extracted, but the document's structure and embedded URLs clearly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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 https://netcdn.xyz/app/479516143/how-to-get-minecraft-dungeons-for-free-game-hack In PDF document text
    • http://www.drent.se/images/free-spins-coin-master-site-wwwquoracom_GM406889139.pdfIn PDF document text
    • http://www.drent.se/images/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/robux-prices_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://www.drent.se/images/coin-master-hack-online-2021_GM406889139.pdfIn PDF document text
    • http://www.drent.se/images/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/clients-minecraft_GM479516143.pdfIn PDF document text
    • http://www.drent.se/images/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • http://www.drent.se/images/http-bitly-coin-master-free-2021-spins_GM406889139.pdfIn PDF document text
    • http://www.drent.se/images/how-to-get-a-free-dominus-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://www.drent.se/images/how-to-get-a-refund-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/roblox-free-online-game_GM431946152.pdfIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d48.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D48 13541 bytes
SHA-256: d56be21ad75b66ecd49e098c5be900e752196b5d419cd196e0da31191815dbbd

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