Malicious PDF — malware analysis report

Static analysis result for SHA-256 b100a140fd862d14…

MALICIOUS

PDF

34.6 KB Created: 2021-07-01 20:22:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d6d170079effac976ca5a8ad1fddba8b SHA-1: 2f0ce76514ba47e3539193733546a74d271d9412 SHA-256: b100a140fd862d14c062314a5ca4edbbf966644176fc6146c7f43539fee12cf4
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains numerous embedded URLs and a link farm structure, strongly suggesting it is designed to redirect users to external sites offering game cheats and hacks. The ML classifier and PDF heuristics indicate a high likelihood of malicious intent, likely to deliver a second-stage payload or phish for credentials. No scripts were extracted, but the document's structure and embedded links are indicative of a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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-sunglasses-free-game-hack
    • http://www.alrashed-alsaleh.com/userfiles/files/free-robux-survey_GM431946152.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/fencing-reach-hack-roblox_GM431946152.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/coinmaster-fan-page_GM406889139.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/free-spins-coin-master-apple_GM406889139.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/how-to-get-free-robux-easy-from-a-group_GM431946152.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/free-robux-sites-that-work_GM431946152.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/how-to-get-free-robux-games_GM431946152.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/free-robux-without-any-verification_GM431946152.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/how-to-hack-roblox-with-cookie-editor_GM431946152.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/free-level-6-injector-for-roblox_GM431946152.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/how-to-win-free-robux_GM431946152.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/free-links-coin-master_GM406889139.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/roblox-payment-exe-download-free_GM431946152.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/coin-master-free-spins-link-today-2021_GM406889139.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/minecraft-classic-free_GM479516143.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/free-minecraft-accounts-reddit_GM479516143.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/how-to-get-free-robux-easy-2021_GM431946152.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/how-to-hack-coin-master-root_GM406889139.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/hack-coin-master-8-ball-pool_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003267.bin
b713b28e816afd176d23f3a16e7f7c870133ab7fdc6fa78b6be372f894cf7f2c
pdf-font-stream PDF embedded font (sfnt) at offset 0x3267 21912 bytes
font_01_sfnt_off000062e8.bin
cb5c0d02001d8ec3a3524f346e59decbaad59a38b462eb6b1fd73dab2930c0cb
pdf-font-stream PDF embedded font (sfnt) at offset 0x62E8 18788 bytes