Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f0b6d68e27a0425…

MALICIOUS

PDF

48.7 KB Created: 2021-06-03 08:30:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5b214a49107d93064af60b142ca48084 SHA-1: ac08f6b71e9da91a735af59e5730b5a51280caa5 SHA-256: 3f0b6d68e27a042519382dc67914f9fe10c9bd873fbff2820ccc7ecb23026aee
102 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are structured as SEO-friendly slugs pointing to game-related content, suggesting a link farm designed to attract users. One embedded URL, 'https://netcdn.online/app/431946152/roblox-demon-game-hack', is directly associated with a malicious ML classification. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.online/app/431946152/roblox-demon-game-hack
    • https://www.opertus-me.com/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdf
    • https://www.opertus-me.com/uploaded_files/userfiles/files/minecraft-gun-mod-download-free_GM479516143.pdf
    • https://www.opertus-me.com/uploaded_files/userfiles/files/coin-master-free-spins-link-2021-ios_GM406889139.pdf
    • https://www.opertus-me.com/uploaded_files/userfiles/files/como-hackear-coin-master-sin-verificacion-humana_GM406889139.pdf
    • https://www.opertus-me.com/uploaded_files/userfiles/files/how-to-setup-a-minecraft-server-for-free_GM479516143.pdf
    • https://www.opertus-me.com/uploaded_files/userfiles/files/free-spins-coin-master-hack-2021_GM406889139.pdf
    • https://www.opertus-me.com/uploaded_files/userfiles/files/roblox-demon_GM431946152.pdf
    • https://www.opertus-me.com/uploaded_files/userfiles/files/can-you-give-me-free-robux_GM431946152.pdf
    • https://www.opertus-me.com/uploaded_files/userfiles/files/free-robux-card-codes_GM431946152.pdf
    • https://www.opertus-me.com/uploaded_files/userfiles/files/coin-master-34-4-hack_GM406889139.pdf
    • https://www.opertus-me.com/uploaded_files/userfiles/files/hacks-para-roblox_GM431946152.pdf
    • https://www.opertus-me.com/uploaded_files/userfiles/files/free-arsenal-hacks_GM431946152.pdf
    • https://www.opertus-me.com/uploaded_files/userfiles/files/free-coin_GM406889139.pdf
    • https://www.opertus-me.com/uploaded_files/userfiles/files/coin-master-free-coins-link_GM406889139.pdf
    • https://www.opertus-me.com/uploaded_files/userfiles/files/coin-master-free-gift-links-2021_GM406889139.pdf
    • https://www.opertus-me.com/uploaded_files/userfiles/files/pokemon-go-free-nickname_GM1094591345.pdf
    • https://www.opertus-me.com/uploaded_files/userfiles/files/roblox-free-clothes-generator_GM431946152.pdf
    • https://www.opertus-me.com/uploaded_files/userfiles/files/robux-games_GM431946152.pdf
    • https://www.opertus-me.com/uploaded_files/userfiles/files/cmaster-club-coin-master-hack_GM406889139.pdf
    • https://www.opertus-me.com/uploaded_files/userfiles/files/how-to-create-group-in-coin-master-free-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051e3.bin
b41892b4e33e8a9ae9a0516df00e8b52d1bdbe3f572001fee6528554ba2f418a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51E3 26220 bytes
font_01_sfnt_off00008f02.bin
450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F02 5696 bytes
font_02_sfnt_off00009c14.bin
154e8108477d046bb889977307a11af941b4a6aa2dcdd37083d059027e482bf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C14 18212 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.