Malicious PDF — malware analysis report

Static analysis result for SHA-256 33748b47974323f3…

MALICIOUS

PDF

43.3 KB Created: 2021-05-19 13:04:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c336f9dbb2fe9e85266a86d57042abda SHA-1: e799d206e677cd38c7f1bbac3b4c2f05bef6a4b8 SHA-256: 33748b47974323f3585a6337d478f839b45458266b35dc12633a8f2764e67f95
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'free generators' and 'game hacks' for popular games. The primary lure directs users to `https://netcdn.xyz/app/431946152/robloxfun-com-robux-game-hack`, which is identified as malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or scam attempt, likely delivered as a spearphishing attachment.

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/robloxfun-com-robux-game-hack In PDF document text
    • https://www.ausecus.com/images/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • https://www.ausecus.com/images/coin-master-card-hack-app_GM406889139.pdfIn PDF document text
    • https://www.ausecus.com/images/coin-master-free-bonus_GM406889139.pdfIn PDF document text
    • https://www.ausecus.com/images/coin-master-invite-friends-hack_GM406889139.pdfIn PDF document text
    • https://www.ausecus.com/images/roblox-survey-for-robux_GM431946152.pdfIn PDF document text
    • https://www.ausecus.com/images/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ausecus.com/images/free-robux-android_GM431946152.pdfIn PDF document text
    • https://www.ausecus.com/images/free-roebucks-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.ausecus.com/images/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • https://www.ausecus.com/images/spin-and-coin_GM406889139.pdfIn PDF document text
    • https://www.ausecus.com/images/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.ausecus.com/images/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.ausecus.com/images/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • https://www.ausecus.com/images/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.ausecus.com/images/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.ausecus.com/images/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ausecus.com/images/multiplayer-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://www.ausecus.com/images/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.ausecus.com/images/earn-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ausecus.com/images/giftrobux-com-generator_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049fe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49FE 26780 bytes
SHA-256: 25df8640809d271b7dd1836b5de1209700bd0afb83c1f7f9f770b608ceb07a88
font_01_sfnt_off0000873e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x873E 18184 bytes
SHA-256: fb2878a91dd4ae4631059b536a064fe34c72006964cde351e60079f6cb65e1b9

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