Malicious PDF — malware analysis report

Static analysis result for SHA-256 86fde588ca5b354c…

MALICIOUS

PDF

34.6 KB Created: 2021-07-02 05:02:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 78772ad80ee345513d7815f173a621f9 SHA-1: afebc850cc4af330d5b23d9c4b330da03e973165 SHA-256: 86fde588ca5b354ce46068334d18e19704c7d6e68a7223686ed873e14fe7ae78
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which in turn hosts further PDF documents containing similar lures. No scripts were extracted, but the embedded URLs and heuristic firings strongly indicate a 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/roblox-reaper-simulator-hack-game-hack In PDF document text
    • http://astdubai.co/userfiles/files/free-script-executor-roblox_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-robux-pasteurbire_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/a-wolf-or-other-roblox-hack_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/tiktok-free-10-likes_GM835599320.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-32-hack-apk_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-music-id-roblox_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/robux-codes_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/duck-roblox-free_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-hack-roblox-money-on-ipad_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/como-ser-hacker-en-roblox-mad-city_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/best-way-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-games-hack_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-get-free-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-kohls-admin-roblox_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/20210-robux-promo-code-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000313d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x313D 21824 bytes
SHA-256: 2e36ffdf8b472b96b170352f91426b2656dd0ec02e740fae0fdb639a8007a3a9
font_01_sfnt_off00006133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6133 19456 bytes
SHA-256: b8ba56e58cf7b90947b734956fe8c774e9e164922ad6a665b5a7e1a0e33f6a6e

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