Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbde8c8c2f5334ae…

MALICIOUS

PDF

34.1 KB Created: 2021-07-04 17:14:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d0b0fab4292230beaa58390e61f14384 SHA-1: 09d0c600c0c022c6344f17e8640c824d222331f0 SHA-256: fbde8c8c2f5334ae4590cd9aff545e1c57f2925f8ae7185aa007d3da7274aa8b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering via a deceptive link, likely intended to lead users to a site that may host further malware or phishing content.

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/479516143/free-minecraft-skin-packs-game-hack In PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/minecraft-free-demo_GM479516143.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/play-coin-master-online-free_GM406889139.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/free-robux-eoblox-fiddler_GM431946152.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/how-to-get-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/best-free-roblox-exploits-v3rmillion_GM431946152.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/how-to-get-free-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/how-to-get-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/roblox-free-hair-codes_GM431946152.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/download-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/robux-gratis_GM431946152.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/free-100-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/rs-free-roblox_GM431946152.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/pubg-mobile-uc-qatar_GM1330123889.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/robux-free-generator-2021_GM431946152.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/how-do-you-get-roblox-for-free_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_off0000320d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x320D 22132 bytes
SHA-256: afba1e15824e88460568a8f8539731ee5125f5678c3c510481a317dd40c289c4
font_01_sfnt_off0000633e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x633E 18180 bytes
SHA-256: af546ec7d16cdc8db8a545ddb361d3216713a52e8bef528030956627ce368622

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