Malicious PDF — malware analysis report

Static analysis result for SHA-256 47e3e2d2e9f1ae12…

MALICIOUS

PDF

41.6 KB Created: 2021-04-28 10:15:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5cf050fc5ef932ede07ffabf3d7b58df SHA-1: d31aaed43fb0988d0de33022b95ae0f4b0cf6d37 SHA-256: 47e3e2d2e9f1ae12d646be0d84183c8d7761fa788a5da4cd2c31c0f6b1078af8
208 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure related to 'free Robux hacks' and impersonates Facebook to trick users into clicking malicious links. The document contains multiple embedded URLs that redirect to known malicious infrastructure, indicating a phishing or credential harvesting attempt. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 6

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/free-unlimited-robux-hack-is-legal-game-hack.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/431946152/free-unlimited-robux-hack-is-legal-game-hack In PDF document text
    • https://lib.stie-yai.ac.id/repository/freer-robux-codes.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-hack-peoples.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-instantly-get-free-robux-in-roblox-2021.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-pc.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-easy-robux-today.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/every-free-item-in-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/download-hack-roblox-2021-fr-bee-swarm-simulator.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-cheat-farbe.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-hack-roblox-kat.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-phone-hack.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_off00004303.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4303 26148 bytes
SHA-256: ae89b8031d0702bd33840059cc53bc2e803e79b217e852e81a0d5b072fb86225
font_01_sfnt_off00007d01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D01 19620 bytes
SHA-256: 60b346b2996d714418b0d3c683bb8444553ed6d7bc1fbefbe4e1b960189394e8

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