Malicious PDF — malware analysis report

Static analysis result for SHA-256 09d3d940f7f0ee9e…

MALICIOUS

PDF

47.7 KB Created: 2021-05-16 23:10:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c19bfae5804154bdc2b1d1cbad913a5f SHA-1: 6759b2592630b1511e264c9e01a1287fdc17f81f SHA-256: 09d3d940f7f0ee9ef8bf8e1dc2cb7f6eef59ec5c2fb32ccd4a4671f3f445b494
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which appear to be part of a link farm designed to attract traffic related to games like Minecraft and Coin Master. The primary URL, https://netcdn.xyz/app/479516143/how-to-hack-a-minecraft-server-game-hack, suggests a lure for users interested in game exploits. The ML classifier also flagged this PDF as malicious, indicating a high probability of malicious intent. No scripts were extracted, but the extensive link farm and the nature of the lures point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8715

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/479516143/how-to-hack-a-minecraft-server-game-hack PDF link annotation
    • http://www.e-lysis.com/images/free-minecraft-java-server_GM479516143.pdfIn PDF document text
    • http://www.e-lysis.com/images/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/coin-master-mod-apk-hack_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/coin-master-hacks-no-downloading_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/roblox-free-skin_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
    • http://www.e-lysis.com/images/earn-rbx_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/how-to-get-free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://www.e-lysis.com/images/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/free-spins-coin-master-legit_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/google-play-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/free-robux-download_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/coin-master-hack-unlimited-spins-and-coins-cheats_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/coin-master-20-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://www.youtIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49F2 25696 bytes
SHA-256: 8d3dbc8a7b1a6b81ddaf56dd333d7868b9557ab11dfafab5f4c1b1085b3ff394
font_01_sfnt_off00008385.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8385 3020 bytes
SHA-256: f1a29adcea636583330be8db4f6466410de551ac48576b9e1aa5c34e2d665a1f
font_02_sfnt_off00008dda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DDA 2816 bytes
SHA-256: 4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f
font_03_sfnt_off000097eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97EB 18156 bytes
SHA-256: a161276dde2563737e729d23e9d7b4e88663ff4ff7cddafc48ded70db5af995a

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