Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c61e1fe0e2a5168…

MALICIOUS

PDF

44.9 KB Created: 2021-05-10 21:00:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 3613429f95a61b403a0df1a453c59cb9 SHA-1: 0dbc1e3c8ec4922b57690678358798d6e2c25960 SHA-256: 0c61e1fe0e2a5168d6e7bc17e91b9987d9a9dae8072ee7d727ce99434219f133
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a malicious redirector link and a visual download button, indicating an attempt to trick the user into downloading potentially harmful content. The ML classifier also flagged this PDF as malicious. The document body and embedded URLs suggest a lure related to game hacks or cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

Heuristics 3

  • 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/coin-master-3.2-android-mod-hack-apk-download-game-hack In PDF document text
    • http://librarysenior.com//repository/coin-master-ios-hack-download_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/coin-master-official-website_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/free-daily-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/free-minecraft-mods-for-ps4_GM479516143.pdfIn PDF document text
    • http://librarysenior.com//repository/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/coin-master-apk-hack-358_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/coin-master-online_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/free-roblox_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/minecraft-free-android_GM479516143.pdfIn PDF document text
    • http://librarysenior.com/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/coin-master-hacking-news_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/minecraft-client-download_GM479516143.pdfIn PDF document text
    • http://librarysenior.com/repository/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/hack-coin-master-apk-32-download_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004979.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4979 24680 bytes
SHA-256: bd8c493252b505f74eb04f74b1bc8c477d3ecf9fa96ee1f57a250d65cd99b17f
font_01_sfnt_off00008113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8113 2920 bytes
SHA-256: 601c50867a41b9362538ff18e5f9479a0f9badf698aaf1eb7e88469c11719db7
font_02_sfnt_off00008b2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B2D 18836 bytes
SHA-256: 10108fc4d754c0fb1f8ead0e24b5a94317ce5a25005e69ba196e7248b5abef1a

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