Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d1c5d836108ef03…

MALICIOUS

PDF

34.4 KB Created: 2021-06-19 01:31:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 471572b13908e3eee71fee19c3befb9f SHA-1: 1be03283b106a2594b9353de82c748b6dffd540f SHA-256: 2d1c5d836108ef035216e485b0c8c245212a42052df43fec1d1a8361ffc249a0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free currency. The primary redirector URL is http://netcdn.co/app/431946152/free-swoosh-hair-in-roblox-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate it's designed to exploit user interest in online games to lead them to malicious 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.co/app/431946152/free-swoosh-hair-in-roblox-game-hack In PDF document text
    • http://razredna-nastava.net/files/free-roblox-card_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/coin-master-hack-ios-apk_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/www-robux-us_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/coin-master-viking-quest-hack_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/100-robux_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • http://razredna-nastava.net/files/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/hack-master-coin-pc_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/roblox-assassin-hack-2021_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
font_00_sfnt_off00002f32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F32 22404 bytes
SHA-256: fe53b3532ea60a2b390ce63893cd04943ecfd6a40bed171788c2ea7be653aedd
font_01_sfnt_off00006141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6141 19100 bytes
SHA-256: ede4aa4177fb783cfcbed5951ad9d481da5810b46e0470982880373b307a19ff

Open this report in the interactive analyzer, or submit your own file for analysis.