Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb19727eaea40d7a…

MALICIOUS

PDF

43.0 KB Created: 2021-05-16 12:04:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2ba37e6a0357e3badf78fad8727d1614 SHA-1: d30130a22e435b50b4e3152124ad8a6e939bbafb SHA-256: bb19727eaea40d7ade56368e118a8653a88739f6bd6fc3eea523fce78bd481c7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or scam attempt. The primary lure directs users to 'https://netcdn.xyz/app/406889139/free-coins-coin-master-hack-game-hack', likely to download a secondary payload or lead to further malicious sites. The document's structure and embedded links strongly suggest a malicious intent to trick users into clicking through to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/free-coins-coin-master-hack-game-hack In PDF document text
    • http://io24.com.ar/images/how-to-win-robux_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://io24.com.ar/images/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/free-printable-roblox-coloring-pages_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/free-hair-roblox-boy_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/coin-master-hacks-for-pet-food_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/free-spins-and-coins-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://io24.com.ar/images/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/cpbildco-robux_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/coin-master-links-for-today_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
stream_003_off0000491a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x491A 27544 bytes
SHA-256: 197ca2462d80cefa7f7a8dd434ba5bfd8b9ca6ba594004ed1619a5f365fece4f
font_01_sfnt_off0000873f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x873F 17880 bytes
SHA-256: d4b290fbe96f806a63e53895600235ad07ee700a50234ed47d5e5eeda0b1e0de

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