Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a8111bdbcc6dbbe…

MALICIOUS

PDF

34.6 KB Created: 2021-06-19 20:04:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 716941dd43b97bdd9d537fc0d6ce35a4 SHA-1: d610f997d1c642c89bb86758c26111068ace01ae SHA-256: 4a8111bdbcc6dbbea583293f87cee267cc6e55fc1980ca161a9d087a66dd5ef7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains embedded links that redirect to known malicious infrastructure, specifically advertising "free generators" and "game hacks" for popular online games. The document body and extracted URLs strongly suggest a phishing or scam attempt designed to trick users into visiting malicious sites. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious redirection, likely leading to further malware or credential harvesting.

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/free-roblox-animation-script-game-hack In PDF document text
    • https://www.flexcable.com/images/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • https://www.flexcable.com/images/free-robux-me_GM431946152.pdfIn PDF document text
    • https://www.flexcable.com/images/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.flexcable.com/images/coin-master-free-spin-sites_GM406889139.pdfIn PDF document text
    • https://www.flexcable.com/images/coin-master-hack-link-2021_GM406889139.pdfIn PDF document text
    • https://www.flexcable.com/images/how-to-hack-money-on-roblox-rocitizens_GM431946152.pdfIn PDF document text
    • https://www.flexcable.com/images/robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.flexcable.com/images/roblox-how-to-get-private-server-for-free_GM431946152.pdfIn PDF document text
    • https://www.flexcable.com/images/youtube-how-to-hack-free-robux-using-pastebin_GM431946152.pdfIn PDF document text
    • https://www.flexcable.com/images/robux-match_GM431946152.pdfIn PDF document text
    • https://www.flexcable.com/images/minecraft-maps-pe-free-download_GM479516143.pdfIn PDF document text
    • https://www.flexcable.com/images/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • https://www.flexcable.com/images/coin-master-free-coins-link-facebook_GM406889139.pdfIn PDF document text
    • https://www.flexcable.com/images/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://www.flexcable.com/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.flexcable.com/images/coin-master-gold-cards-hack-english_GM406889139.pdfIn PDF document text
    • https://www.flexcable.com/images/coin-master-hack-version-2021_GM406889139.pdfIn PDF document text
    • https://www.flexcable.com/images/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.flexcable.com/images/roblox-game-free-download-for-windows-8_GM431946152.pdfIn PDF document text
    • https://www.flexcable.com/images/free-robux-without-human-verification_GM431946152.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_off0000306d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x306D 22264 bytes
SHA-256: 45dbad6211195de7ec5c86e65abcb3aafd1b351c9103af09e98063f52fea6c52
font_01_sfnt_off00006243.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6243 19124 bytes
SHA-256: 9c29a8ef1182887515e460001550900cd6d571fe24c2b417f4f8a68a44592049

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