Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a853036b45740bd…

MALICIOUS

PDF

46.5 KB Created: 2021-05-15 12:42:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 74a216c58465d6911a9d42e0c44c5f93 SHA-1: a978e1882b11a6bf39986ef4336b2b3855de7543 SHA-256: 3a853036b45740bde1a7c9525b51aabd48d4046ef84e0af5090171c187e7b5aa
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains a lure for game hacks and requests sensitive recovery secrets, indicating a phishing or scam attempt. The embedded URL points to a suspicious domain likely hosting a secondary payload. Although no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 4

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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/406889139/coin-master-hack-https-coinms-net-game-hack
    • http://www.dhs.or.id/new/public/ckfinder/userfiles/files/what-is-exploiting-in-roblox_GM431946152.pdf
    • http://www.dhs.or.id/new/public/ckfinder/userfiles/files/coin-master-free-spin-and-coin-link-app_GM406889139.pdf
    • http://dhs.or.id/new/public/ckfinder/userfiles/files/coin-master-gift-link_GM406889139.pdf
    • http://www.dhs.or.id/new/public/ckfinder/userfiles/files/minecraft-svg-images-free_GM479516143.pdf
    • http://www.dhs.or.id/new/public/ckfinder/userfiles/files/who-to-get-free-robux_GM431946152.pdf
    • http://www.dhs.or.id/new/public/ckfinder/userfiles/files/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdf
    • http://dhs.or.id/new/public/ckfinder/userfiles/files/coin-master-cheats_GM406889139.pdf
    • http://www.dhs.or.id/new/public/ckfinder/userfiles/files/how-to-get-free-cards-for-coin-master_GM406889139.pdf
    • http://www.dhs.or.id/new/public/ckfinder/userfiles/files/free-robux-co_GM431946152.pdf
    • http://dhs.or.id/new/public/ckfinder/userfiles/files/free-coins-coin-master-blog_GM406889139.pdf
    • http://www.dhs.or.id/new/public/ckfinder/userfiles/files/get-free-robux-now_GM431946152.pdf
    • http://dhs.or.id/new/public/ckfinder/userfiles/files/coin-master-hack-app_GM406889139.pdf
    • http://dhs.or.id/new/public/ckfinder/userfiles/files/free-coins_GM406889139.pdf
    • http://www.dhs.or.id/new/public/ckfinder/userfiles/files/roblox-executor-free_GM431946152.pdf
    • http://dhs.or.id/new/public/ckfinder/userfiles/files/get-free-robux-today_GM431946152.pdf
    • http://www.dhs.or.id/new/public/ckfinder/userfiles/files/adopt-me-roblox-hacks_GM431946152.pdf
    • http://dhs.or.id/new/public/ckfinder/userfiles/files/coin-master-free-daily-spins_GM406889139.pdf
    • http://dhs.or.id/new/public/ckfinder/userfiles/files/coin-master-gift-hack_GM406889139.pdf
    • http://dhs.or.id/new/public/ckfinder/userfiles/files/free-robux-that-actually-works-2021_GM431946152.pdf
    • http://dhs.or.id/new/public/ckfinder/userfiles/files/coin-master-spin-hack-link_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c6d.bin
cffad166f3dee87953066b9b1458744941d3bef57eb24491d0d33d2ddefca7b6		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C6D 26176 bytes
font_01_sfnt_off000087e2.bin
1dd933c112880b232546f3aab6a17784a8f412d39fd551cc6eb31c5a04c3ce57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87E2 3380 bytes
font_02_sfnt_off000093cb.bin
98ac4e66809d5f1f5b8246c3389f99af71150df64b93ee4f4ebb1a2fd2e53783		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93CB 18152 bytes

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