Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d320d872e35b753…

MALICIOUS

PDF

51.9 KB Created: 2021-06-09 16:06:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cce0526d166eaa94677c090a82b00c09 SHA-1: 7dce774badbacf551acffddfdcf7c292255cf382 SHA-256: 2d320d872e35b7536a295c66a259c331163609f8981357cb87c5a2ef5c9b8a7d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as "free generator / game hack" lures. The primary URL, https://netcdn.tw/app/431946152/how-to-get-free-robux-on-computer-website-game-hack, is associated with malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt to redirect the user to a malicious site for further payload delivery or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9464

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.tw/app/431946152/how-to-get-free-robux-on-computer-website-game-hack In PDF document text
    • http://legs11.co.za/images/coin-master-spin-hack-pc_GM406889139.pdfIn PDF document text
    • http://legs11.co.za/images/coin-master-free-spins-and-coins-haktuts_GM406889139.pdfIn PDF document text
    • http://legs11.co.za/images/tiktok-free-hulu-account_GM835599320.pdfIn PDF document text
    • http://legs11.co.za/images/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://legs11.co.za/images/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://legs11.co.za/images/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://legs11.co.za/images/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://legs11.co.za/images/minecraft-dungeons-download-free_GM479516143.pdfIn PDF document text
    • http://legs11.co.za/images/groups-in-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://legs11.co.za/images/how-to-earn-robux-free-2021_GM431946152.pdfIn PDF document text
    • http://legs11.co.za/images/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://legs11.co.za/images/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://legs11.co.za/images/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://legs11.co.za/images/coin-master-free-spins-and-coins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://legs11.co.za/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://legs11.co.za/images/how-to-spam-without-notepad-and-hacking-roblox_GM431946152.pdfIn PDF document text
    • http://legs11.co.za/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://legs11.co.za/images/tiktok-comments-free_GM835599320.pdfIn PDF document text
    • http://legs11.co.za/images/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • http://legs11.co.za/images/coin-master-free-spins-blogspot_GM406889139.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
font_00_sfnt_off00005169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5169 23884 bytes
SHA-256: 8b92af16fcb81d53915c12408c98fe0a5a80c5ef4481c477a94ef0a468bd78a5
font_01_sfnt_off00008803.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8803 9356 bytes
SHA-256: e87da71c774285e7265e9c81a1d40afdfbf10fbc9490a03f7ab4ed97d5cf372d
font_02_sfnt_off0000a62b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA62B 19036 bytes
SHA-256: 4805ccaeacf0d3d334c4efd4f5d4e184ec6ba292f1de406c048d7e7246c386e6

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