Malicious PDF — malware analysis report

Static analysis result for SHA-256 27715a781d18afd5…

MALICIOUS

PDF

35.7 KB Created: 2021-06-25 18:13:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2c6f15313baac02c6f8e28aeb329cc62 SHA-1: 792e074666f34b836377d440ce6cb0a8213104d5 SHA-256: 27715a781d18afd5770b2d02d3aa55e65001ccfadded6d86e6c92e212684a3cb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.co/app/431946152/get-free-money-in-adopt-me-roblox-game-hack. This link is presented as a "free generator / game hack" lure, indicating a social engineering attempt to trick users into visiting a potentially harmful site. The presence of multiple similar URLs suggests a broad phishing or scam campaign.

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.co/app/431946152/get-free-money-in-adopt-me-roblox-game-hack In PDF document text
    • http://feuerwehr-rheinau.de/images/free-spins-coin-master-links-twitter_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/coin-master-free-spins-iphone-2021_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-robux-hack-for-2021-mystic-plays_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/how-to-save-drawings-in-free-draw-2-roblox_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/get-free-robux-paste_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/roblox-how-to-get-free-robux-no-hack_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-roblox-promocode-for-robux-july-2021_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/roblox-free-catalog-things_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/undertale-monster-vs-human-roblox-hack_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/roblox-cheat-engine-hack-admin_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/coin-master-free-2021-spin-link_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_off0000300e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x300E 23332 bytes
SHA-256: dc09428d0c7255dae4f0238824eb089069f6a90b88d933445d8d761d687dadc8
font_01_sfnt_off0000651a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x651A 19480 bytes
SHA-256: 65e58d413c2faf87077becbcf7e75216eab8d961f6d3ffd85c28cbe64359dbb7

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