Malicious PDF — malware analysis report

Static analysis result for SHA-256 294d3b2d61428b4b…

MALICIOUS

PDF

45.4 KB Created: 2021-05-12 11:04:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fa491af3eecbf29c27257cb3d26185da SHA-1: 336e76ca9cfb6fc4d4d27ea119d2990b9db06cce SHA-256: 294d3b2d61428b4bfa001c2d10fcea0441b8e37a8f8c466b7568b2626b15c6ea
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'generators'. The heuristic firings confirm these links lead to known malicious redirectors and a lure for free generators. While no scripts were extracted, the document's structure and embedded URLs strongly indicate a phishing or scam attempt designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/406889139/coin-and-spin-game-hack In PDF document text
    • https://humansci.kyst.com.tw/image/data/files/coin-master-hack-version_GM406889139.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/how-to-setup-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/hack-coin-master-for-iphone_GM406889139.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/roblox-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/roblox-free-no-download_GM431946152.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/robux-prices_GM431946152.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/free-mod-apk-coin-master_GM406889139.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/coin-master-hack-apk-35-33_GM406889139.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/coin-master-card-link-free_GM406889139.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/robux-apk_GM431946152.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/roblox-free-robux-com_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_003_off00004a57.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A57 26224 bytes
SHA-256: 90f3c0e53aae662e8f745da623a70a88d13793518228dceedc74ae0ceae5c705
font_01_sfnt_off000085eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85EB 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off00009115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9115 17564 bytes
SHA-256: a6ef3811b1a03bfcc16e5339e9aa6379662d7be5e2ddecd345c1ce512af9bda3

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