Malicious PDF — malware analysis report

Static analysis result for SHA-256 d97ee3f0a1bf3043…

MALICIOUS

PDF

35.1 KB Created: 2021-06-19 04:42:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 001c7ac75d56300a710467cbbd7fb1f7 SHA-1: c87614d2eace35c8bdaefb9ac554726e2eff658b SHA-256: d97ee3f0a1bf30439ebcce0bbef7ee4391b853c484b16a5c9b45ce5d7eb382b2
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many of which are presented as 'SEO link farms' and lead to pages offering 'free Robux' or game hacks. The ML classifier strongly indicated maliciousness, and the presence of a download button lure further supports a malicious intent. The primary goal appears to be directing users to download potentially unwanted or malicious applications.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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 http://netcdn.co/app/431946152/roblox-robux-hack-android-game-hack
    • http://sistem.amikomsolo.ac.id/perpus/repository/apps-for-free-robux_GM431946152.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-stuff-for-roblox-create_GM431946152.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/how-to-buy-robux-for-free-2021_GM431946152.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-robux-no-human-verification-2021_GM431946152.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/how-to-get-free-robux-gift-cards_GM431946152.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/how-to-get-free-robux-easy-2021_GM431946152.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-robux-sites-that-work_GM431946152.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/how-to-hack-coin-master-in-pc_GM406889139.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/today-free-spin-coin-master_GM406889139.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/guuuddinfo-hack-robux_GM431946152.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-roblox-girl-clothes_GM431946152.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-robux-codes-website_GM431946152.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-coin-master-app_GM406889139.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-robux-android_GM431946152.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/synapse-x-roblox-free-download-2021_GM431946152.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/robloxmatchcom-free-robux_GM431946152.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/how-to-get-minecraft-pe-for-free_GM479516143.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/minecraft-java-edition-key-free_GM479516143.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/roblox-hack-download-2021-android_GM431946152.pdf
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-robux-safe_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000325e.bin
0f1f01b10b6523e91dce9b31acbb0dc484be6d4b596db89adea1c2a967cad81c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x325E 22400 bytes
font_01_sfnt_off000063ff.bin
51362d53c144597ac8a40e0521aeca742905a1b4b0468c1f98d2983ad33140f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63FF 19088 bytes

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