Malicious PDF — malware analysis report

Static analysis result for SHA-256 d246ce72a9d169f1…

MALICIOUS

PDF

35.6 KB Created: 2021-07-04 04:38:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e7da60d2014d86256a7c36c576dd7eb7 SHA-1: 5a6407459eb6aac87cf4635b8aee3cfb72e143d6 SHA-256: d246ce72a9d169f1e14775bb050437a9f5813dc2551c427c832049eb0193067d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, with a primary link identified as a malicious redirector. The document body and heuristic firings indicate a lure for 'free Robux' or game hacks, directing users to the malicious URL http://netcdn.tw/app/431946152/free-robux-without-human-verification-game-hack. This pattern is consistent with phishing or scam attempts designed to lead users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/free-robux-without-human-verification-game-hack In PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/how-to-make-your-own-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/robux-gratis-no-hack_GM431946152.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/how-to-get-builders-club-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/robux-generator-free-dowloadn-torrent_GM431946152.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/glasses-roblox-free_GM431946152.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/free-robux-today_GM431946152.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/hack-for-unboxing-simulator-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/is-roblox-on-ps4-free_GM431946152.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/roblox-money-hack-restaurant-tycoon_GM431946152.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/tiktok-free-views_GM835599320.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/roblox-exploit-scripts_GM431946152.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/how-to-make-a-hacker-outfit-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/https-www-free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/how-to-change-roblox-name-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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E9 23008 bytes
SHA-256: e599d358f799c3cf5d7cd61df1b66f70ba8e8ced8d98f53b64b12cd95e2b902e
font_01_sfnt_off00006485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6485 19700 bytes
SHA-256: 8b14ee22fcfa25f62777b70428c8c13e08516b960c8f7fddc92c23ad02cefb37

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