Malicious PDF — malware analysis report

Static analysis result for SHA-256 35650ab2bfebf480…

MALICIOUS

PDF

49.8 KB Created: 2021-06-03 22:03:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9be7218a03012761246e4a8f31483d71 SHA-1: c855994320aae44bf0f178899bfe3aba2d59a6aa SHA-256: 35650ab2bfebf4805e81e16027c83a9ef61de69632b21087c967116414b6e9ce
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple embedded URLs and a visual call-to-action, strongly suggesting a phishing or scam attempt. The primary URL, https://netcdn.online/app/431946152/robuxmatchcom-free-robux-game-hack, is likely a lure to download a second-stage payload or redirect to a malicious site. While no scripts were explicitly extracted, the ML classifier's high confidence score and the presence of external URIs indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.online/app/431946152/robuxmatchcom-free-robux-game-hack In PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/new-free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-roblox-generator_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-executor-roblox_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-free-spins-daily-1-ga_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/can-lucky-patcher-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/mistplay-robux_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/roblox-hax_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-pet-food-coin-master_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/tiktok-par-free-followers-kaise-badhaye_GM835599320.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/pokemon-go-free-zaragoza_GM1094591345.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-minecraft-thumbnails_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/roblox-games-free_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004fd8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FD8 30480 bytes
SHA-256: c8cf96009b3951b56c4577229cef9c094a4415b0e08befd9e59bfdc53a8bed4f
font_01_sfnt_off00009551.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9551 2820 bytes
SHA-256: d88f25cfe237a714f996150a11dd8a058f0f7c3e9d1ae91c17b46c10409b6c0b
font_02_sfnt_off00009eec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EEC 18772 bytes
SHA-256: f6f31f9c0c016e7c7e915a25ed0379b1b52a2107f0cf95fcb0a5807dd5e71c24

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