Malicious PDF — malware analysis report

Static analysis result for SHA-256 6db924cc33895227…

MALICIOUS

PDF

38.2 KB Created: 2021-06-18 13:13:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f2c9a66a42ec4bc2daf26ca9dcfc4fb4 SHA-1: 6d4240c863ef75aa9e7d2965109a0ab922419286 SHA-256: 6db924cc3389522741e79eda53a8bb6582d2b69120fcbb794264c84336884721
142 Risk Score

Malware Insights

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

This PDF document contains a large number of links to other PDF files, many of which appear to be SEO-optimized lures for game cheats and hacks. The primary URL, http://netcdn.co/app/431946152/cheat-roblox-jailbreak-fr-game-hack, suggests a download or exploit attempt. The document's structure and content strongly indicate a phishing or malware distribution scheme disguised as helpful game information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 5

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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/cheat-roblox-jailbreak-fr-game-hack
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/coin-master-hack-lost-world-2021_GM406889139.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/free-robux-group-payouts_GM431946152.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/coin-master-link-daily-get-free-spins-amp_GM406889139.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/minecraft-hacks-list_GM479516143.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/2021-free-spins-coin-master_GM406889139.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/free-download-roblox-for-windows-7-32-bit_GM431946152.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/roblox-gang_GM431946152.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/codes-for-free-knives-for-murder-mystery-on-roblox_GM431946152.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/hacks-to-get-free-robux_GM431946152.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/can-you-give-me-robux_GM431946152.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/httpswwwurcouponsdealcom202103coinmasterfreespinandcoinlinkshtml_GM406889139.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-pc_GM406889139.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins_GM406889139.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/coin-master-hack-no-survey-2021_GM406889139.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/how-to-get-robux-on-roblox_GM431946152.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-2021-ios_GM406889139.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox_GM431946152.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/how-to-make-a-minecraft-server-for-free_GM479516143.pdf
    • https://www.roblox.com/.I
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003dc5.bin
9c0bf6fb9e806b9e0bb9c7d6d3ef976d6f461ea8323f58f4e252c0b13426a039		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3DC5 22740 bytes
font_01_sfnt_off00007068.bin
1a3065ee4887ca5e2dc93217de310cfe31af9f54e47c61eb94278fe4795b55f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7068 19192 bytes

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