Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d29856d5505484d…

MALICIOUS

PDF

24.3 KB Created: 2021-06-18 14:01:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 128dc760455e13e323dade6da5549ba1 SHA-1: 3c628436ceaa252d347a7d73ece12391f5ea82c2 SHA-256: 8d29856d5505484df0fedea3663f60b596e02bc57c6b1b87be7f2096a3641607
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on them by promising free game-related items or hacks. These links redirect to known malicious infrastructure, indicating a phishing or scam attempt. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 3

  • 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.
  • 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/roblox-free-download-no-app-store-game-hack In PDF document text
    • http://www.nguyentraiedu.vn/cms/public/upload/files/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • http://www.nguyentraiedu.vn/cms/public/upload/files/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://www.nguyentraiedu.vn/cms/public/upload/files/no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.nguyentraiedu.vn/cms/public/upload/files/minecraft-bedrock-free-download_GM479516143.pdfIn PDF document text
    • http://www.nguyentraiedu.vn/cms/public/upload/files/gameoffice-net-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.nguyentraiedu.vn/cms/public/upload/files/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.nguyentraiedu.vn/cms/public/upload/files/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.nguyentraiedu.vn/cms/public/upload/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.nguyentraiedu.vn/cms/public/upload/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.nguyentraiedu.vn/cms/public/upload/files/what-is-coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.nguyentraiedu.vn/cms/public/upload/files/jailbreak-roblox-cheats-cage_GM431946152.pdfIn PDF document text
    • http://www.nguyentraiedu.vn/cms/public/upload/files/does-roblox-premium-expire_GM431946152.pdfIn PDF document text
    • http://www.nguyentraiedu.vn/cms/public/upload/files/worst-roblox-avatars_GM431946152.pdfIn PDF document text
    • http://www.nguyentraiedu.vn/cms/public/upload/files/free-robux-android-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.nguyentraiedu.vn/cms/public/upload/files/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.nguyentraiedu.vn/cms/public/upload/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.nguyentraiedu.vn/cms/public/upload/files/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://www.nguyentraiedu.vn/cms/public/upload/files/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • http://www.nguyentraiedu.vn/cms/public/upload/files/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • http://www.nguyentraiedu.vn/cms/public/upload/files/roblox-free-draw-alpha-2_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000034e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34E3 22880 bytes
SHA-256: b6d38923c8254070ab222ed691c5f326319fb7b6392d378ce43264a685926681