Malicious PDF — malware analysis report

Static analysis result for SHA-256 99787e201d8df144…

MALICIOUS

PDF

6.7 KB Created: 2021-07-03 13:53:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 296796b8e9045dd3601569a0bffdf0f5 SHA-1: 2cd0197a86c24fa4efa6a5494078e2d9f3397a90 SHA-256: 99787e201d8df144eb860d09cf5247126d40d4032665ee01a2b1ffa2802702b6
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links to external websites, with one heuristic specifically identifying a known malicious redirector. The document body text and embedded URLs promote 'free Robux' and game hacks, indicating a lure to a phishing or malware distribution site. No scripts were extracted, but the presence of malicious redirectors and the lure content strongly suggest a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9581

Heuristics 3

  • 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.
  • 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/free-robux-android-game-hack In PDF document text
    • http://pspmrsmbpulau.com/opac/repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • https://pspmrsmbpulau.com/opac/repository/free-robux-pastebin-javascript_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/daily-spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/coin-master-hack-online-download_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/hack-coin-master-download-ios_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/free-admin-roblox-commands_GM431946152.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/how-to-get-free-rocket-fuel-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/500-robux-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text

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