Malicious PDF — malware analysis report

Static analysis result for SHA-256 8933091b0ee9eeca…

MALICIOUS

PDF

34.6 KB Created: 2021-06-23 03:01:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1effae651a7460df8aad75b9c3b11198 SHA-1: 25f37a537f9d2988ea1446f8a84a6bb8fdc60987 SHA-256: 8933091b0ee9eeca41c08fee4fea5da1ab4ee0cc85449fc6381822b2624da552
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The primary lure appears to be related to Roblox and Coin Master. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or social engineering attack aimed at redirecting users to potentially harmful sites. The ML classifier also flagged this PDF with high confidence.

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/how-to-hack-roblox-on-a-phone-game-hack In PDF document text
    • http://www.reach360stock.com/uploaded_files/userfiles/files/how-to-hack-jailbreak-roblox-mac_GM431946152.pdfIn PDF document text
    • http://www.reach360stock.com/uploaded_files/userfiles/files/free-coin-master-spin-generator_GM406889139.pdfIn PDF document text
    • http://www.reach360stock.com/uploaded_files/userfiles/files/how-to-change-your-name-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.reach360stock.com/uploaded_files/userfiles/files/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://www.reach360stock.com/uploaded_files/userfiles/files/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://www.reach360stock.com/uploaded_files/userfiles/files/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://www.reach360stock.com/uploaded_files/userfiles/files/hack-robux-2021-android_GM431946152.pdfIn PDF document text
    • http://www.reach360stock.com/uploaded_files/userfiles/files/minecraft-free-install_GM479516143.pdfIn PDF document text
    • http://www.reach360stock.com/uploaded_files/userfiles/files/coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • http://www.reach360stock.com/uploaded_files/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.reach360stock.com/uploaded_files/userfiles/files/roblox-walk-through-walls-cheat-engine_GM431946152.pdfIn PDF document text
    • http://www.reach360stock.com/uploaded_files/userfiles/files/coin-master-home_GM406889139.pdfIn PDF document text
    • http://www.reach360stock.com/uploaded_files/userfiles/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://www.reach360stock.com/uploaded_files/userfiles/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.reach360stock.com/uploaded_files/userfiles/files/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.reach360stock.com/uploaded_files/userfiles/files/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://www.reach360stock.com/uploaded_files/userfiles/files/coin-master-hack-apk-no-fb-login_GM406889139.pdfIn PDF document text
    • http://www.reach360stock.com/uploaded_files/userfiles/files/mm2-hacking-vim-roblox_GM431946152.pdfIn PDF document text
    • http://www.reach360stock.com/uploaded_files/userfiles/files/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.reach360stock.com/uploaded_files/userfiles/files/how-to-put-cheat-codes-roblox-bubblegum_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_off0000305b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x305B 22448 bytes
SHA-256: 048b39888022efdfd4e313f3a826fc1d09588846184a40cf6cac1430d2a43541
font_01_sfnt_off000061f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61F8 19140 bytes
SHA-256: 5899454fc838580cecf2222f29facc2abf242de8650df2310a622f848ff791be

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