Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f8db136b745317a…

MALICIOUS

PDF

46.3 KB Created: 2021-05-14 02:36:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 26a9028f98f44de00c8c4af7c7f06040 SHA-1: 538788b0990dd223628303930e6dbd52db1f52ff SHA-256: 9f8db136b745317a2bcd759829fb69d3f2e1aa450a7c1f4f0caf40daaa6bf818
102 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, identified as a PDF link farm, that point to various game-related cheats and hacks. The ML classifier also flagged this PDF as malicious. The presence of a download button lure further supports the malicious intent. The primary goal appears to be directing users to potentially malicious websites or triggering downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9278

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/431946152/roblox-free-hair-girl-game-hack PDF link annotation
    • http://demenagementlandry.com/images/mcpe-optifine_GM479516143.pdfIn PDF document text
    • http://demenagementlandry.com/images/how-to-hack-coin-master-using-es-file_GM406889139.pdfIn PDF document text
    • http://demenagementlandry.com/images/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/coin-master-free-gold-cards-link_GM406889139.pdfIn PDF document text
    • http://demenagementlandry.com/images/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • http://demenagementlandry.com/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://demenagementlandry.com/images/coin-master-mod-apk-free-download-for-android_GM406889139.pdfIn PDF document text
    • http://demenagementlandry.com/images/best-free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://demenagementlandry.com/images/best-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://demenagementlandry.com/images/free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://demenagementlandry.com/images/coin-master-hack-mod-apk-2021_GM406889139.pdfIn PDF document text
    • http://demenagementlandry.com/images/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://demenagementlandry.com/images/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://demenagementlandry.com/images/roblox-2021_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/free-roblox-toy-codes-not-used_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://demenagementlandry.com/images/coin-master-fan-club_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
font_00_sfnt_off000048d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48D0 28324 bytes
SHA-256: 76321ecb48368028ed74df199a8ede3da9eecc3e0f78c8d3723996e5b9d048d5
font_01_sfnt_off000085c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85C9 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off00009270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9270 18296 bytes
SHA-256: 85bf76e8bd1c39b95a864efdae00349d5ffffd2e934a72b3fb989e9d72ccc849

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