Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0243f159cf5db3b…

MALICIOUS

PDF

43.4 KB Created: 2021-05-14 04:38:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8f3366f3886bfceb4f9f39f1e39650c6 SHA-1: 7cf40bae0c82f9ca05c625d8c5e8b26214e103ac SHA-256: b0243f159cf5db3bd1ffac1185193bb67b95f5760ccb5cadc9af904a74e0a707
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically promoting 'free generator' and 'game hack' lures. The primary malicious link identified is https://netcdn.xyz/app/431946152/how-much-robux-can-you-get-with-1-million-dollars-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate it's designed to lead users to potentially harmful external content, likely as part of a phishing or malware distribution scheme.

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/how-much-robux-can-you-get-with-1-million-dollars-game-hack In PDF document text
    • http://cmme.it/images/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • http://cmme.it/images/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://cmme.it/images/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://cmme.it/images/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • http://cmme.it/images/coin-master-free-daily-spins-today_GM406889139.pdfIn PDF document text
    • http://cmme.it/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://cmme.it/images/coin-master-spin-link-today-free_GM406889139.pdfIn PDF document text
    • http://cmme.it/images/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://cmme.it/images/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://cmme.it/images/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • http://cmme.it/images/free-roblox-website_GM431946152.pdfIn PDF document text
    • http://cmme.it/images/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://cmme.it/images/wwwcoin-master-free-spincom_GM406889139.pdfIn PDF document text
    • http://cmme.it/images/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://cmme.it/images/free-spins-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://cmme.it/images/coin-master-spins-gratis_GM406889139.pdfIn PDF document text
    • http://cmme.it/images/minecraft-noob-vs-pro-vs-hacker_GM479516143.pdfIn PDF document text
    • http://cmme.it/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://cmme.it/images/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • http://cmme.it/images/how-to-free-robux_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
stream_003_off00004882.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4882 25248 bytes
SHA-256: ad2fa421a2d6838f7715ac0d5ccd570716d3ee9f6084636b272f671172c0e223
font_01_sfnt_off00008368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8368 19536 bytes
SHA-256: 876d9410c613bd28eae874a8e258613decc08a63963b9dc9af550a443a712a6c

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