Malicious PDF — malware analysis report

Static analysis result for SHA-256 24e1b70f44b51db8…

MALICIOUS

PDF

42.6 KB Created: 2021-05-14 17:10:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9a92b5761984dd41cf16bcea26b2ab09 SHA-1: d307be1978d2831739f1c64644bd557b278cc830 SHA-256: 24e1b70f44b51db8b3dcfb2db03ed88acabf0835c3afc23c1acce74cd74c7d65
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, identified as a "PDF_SEO_LINK_FARM" heuristic, pointing to websites offering "free Robux" and game hacks. The document body also contains a direct URL to a "free Robux generator" and the authoring application suggests it was generated programmatically, likely to create a large number of SEO-optimized links. The presence of these links and the lure of free in-game currency strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/free-robux-generator-no-human-verification-or-surveys-game-hack
    • http://mycounty.com.ua/images/roblox-free-play_GM431946152.pdf
    • http://mycounty.com.ua/images/can-you-get-robux-for-free_GM431946152.pdf
    • http://mycounty.com.ua/images/how-to-get-free-robux-easy_GM431946152.pdf
    • http://mycounty.com.ua/images/how-to-hack-coin-master-game-without-root_GM406889139.pdf
    • http://mycounty.com.ua/images/minecraft-education-free_GM479516143.pdf
    • http://mycounty.com.ua/images/coin-master-connection-lost-hack_GM406889139.pdf
    • http://mycounty.com.ua/images/hack-coin-master-spin-apk_GM406889139.pdf
    • http://mycounty.com.ua/images/coin-master-free-spins-hack_GM406889139.pdf
    • http://mycounty.com.ua/images/coin-master-free-spins-promo-code_GM406889139.pdf
    • http://mycounty.com.ua/images/free-roblox-promo-codes-for-robux_GM431946152.pdf
    • http://mycounty.com.ua/images/how-to-get-free-spins-grom-coin-master_GM406889139.pdf
    • http://mycounty.com.ua/images/free-spins-coin-master-hack_GM406889139.pdf
    • http://mycounty.com.ua/images/coin-master-free-spins-iphone_GM406889139.pdf
    • http://mycounty.com.ua/images/how-to-get-minecraft-java-for-free_GM479516143.pdf
    • http://mycounty.com.ua/images/coin-master-hack-no-survey-or-verification_GM406889139.pdf
    • http://mycounty.com.ua/images/roblox-jailbreak-hack_GM431946152.pdf
    • http://mycounty.com.ua/images/how-to-get-free-robux-fast_GM431946152.pdf
    • http://mycounty.com.ua/images/free-robux-discord_GM431946152.pdf
    • http://mycounty.com.ua/images/free-coin-master-spins-2021_GM406889139.pdf
    • http://mycounty.com.ua/images/roblox-free-pants_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004850.bin
c7d677473bb51110296277067b3f8c67db576d04818ca8add1ce1b1974b1c287
pdf-font-stream PDF embedded font (sfnt) at offset 0x4850 25604 bytes
font_01_sfnt_off0000815b.bin
b23a4dbd5b2cf0eeb4dbb5626642de4de2979fce29ecd3df28c5d1ef95471ce4
pdf-font-stream PDF embedded font (sfnt) at offset 0x815B 19156 bytes