Malicious PDF — malware analysis report

Static analysis result for SHA-256 c93628356702966f…

MALICIOUS

PDF

32.7 KB Created: 2021-07-20 18:28:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 40946c667ff242d246de9faf04b0c126 SHA-1: 2e9bec6f7f89f8e96045a27189a574898b33da29 SHA-256: c93628356702966f99e2a931c64929b54d2a17792476bfe46a0864493d639d04
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains embedded links that redirect to a known malicious infrastructure, specifically advertising game hacks and free currency generators. The document body and heuristics indicate a lure designed to entice users to click these links, likely leading to further malicious content or downloads. No scripts were extracted, but the presence of malicious redirectors and the lure strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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/431946152/roblox-jailbreak-hack-game-hack In PDF document text
    • https://roberto-gac.com/images/how-to-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://roberto-gac.com/images/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://roberto-gac.com/images/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://roberto-gac.com/images/free-robux-app_GM431946152.pdfIn PDF document text
    • https://roberto-gac.com/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://roberto-gac.com/images/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://roberto-gac.com/images/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • https://roberto-gac.com/images/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • https://roberto-gac.com/images/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://roberto-gac.com/images/coin-master-free-spins-link-today_GM406889139.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_off00002c54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C54 21936 bytes
SHA-256: c1e8331bb47f1074de18c64c8b48135ca7e7e5eb941885962be33c0e265355f9
font_01_sfnt_off00005ca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CA2 18652 bytes
SHA-256: 238776d81d7079e64501f357c145a468ea3a1220ca00fff69d40e8c1a53c01cc