Malicious PDF — malware analysis report

Static analysis result for SHA-256 081515245ef40b29…

MALICIOUS

PDF

51.3 KB Created: 2021-06-11 06:34:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1c8dd5542314ea33ac27a6b2ecdea8aa SHA-1: ddff64824517ea2db1cb3f2b270253586784d8ae SHA-256: 081515245ef40b29c901d9d9d264b06d975752c64d20816b112392b4023e1c77
62 Risk Score

Malware Insights

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

This PDF file contains multiple embedded URIs and a clickable link pointing to external resources, primarily related to obtaining free Robux or game items. The ML classifier strongly indicates maliciousness, and the presence of a raw IP address in a URI suggests an attempt to bypass domain-based defenses. The document's content and linked URLs indicate a phishing or scam attempt to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9724

Heuristics 4

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.tw/app/431946152/how-to-get-free-robux-no-verification-or-survey-2021-game-hack
    • http://122.201.26.170/files/editor/files/free-robux-hack_GM431946152.pdf
    • http://122.201.26.170/files/editor/files/free-game-packs-for-coin-master_GM406889139.pdf
    • http://122.201.26.170/files/editor/files/roblox-skins-girl-free-download_GM431946152.pdf
    • http://122.201.26.170/files/editor/files/minecraft-for-chromebook-free_GM479516143.pdf
    • http://122.201.26.170/files/editor/files/coin-master-free-spin-facebook-link_GM406889139.pdf
    • http://122.201.26.170/files/editor/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdf
    • http://122.201.26.170/files/editor/files/how-to-hack-into-someones-roblox-account_GM431946152.pdf
    • http://122.201.26.170/files/editor/files/roblox-password-hacker_GM431946152.pdf
    • http://122.201.26.170/files/editor/files/roblox-verification_GM431946152.pdf
    • http://122.201.26.170/files/editor/files/free-800-robux_GM431946152.pdf
    • http://122.201.26.170/files/editor/files/free-roblox-codd_GM431946152.pdf
    • http://122.201.26.170/files/editor/files/pubg-uc-vietnam_GM1330123889.pdf
    • http://122.201.26.170/files/editor/files/free-robux-2021_GM431946152.pdf
    • http://122.201.26.170/files/editor/files/free-spins-coin-master-daily_GM406889139.pdf
    • http://122.201.26.170/files/editor/files/free-spin-gratis-coin-master_GM406889139.pdf
    • http://122.201.26.170/files/editor/files/free-robux-gift-card-generator_GM431946152.pdf
    • http://122.201.26.170/files/editor/files/play-games-and-get-free-robux_GM431946152.pdf
    • http://122.201.26.170/files/editor/files/60-free-spins-coin-master_GM406889139.pdf
    • http://122.201.26.170/files/editor/files/buy-robux-free_GM431946152.pdf
    • http://122.201.26.170/files/editor/files/free-spins-coin-master-november-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005141.bin
ea74c105626781571f39453337d45933710b3a0ea032ca26c230dd9b06f1c9e2
pdf-font-stream PDF embedded font (sfnt) at offset 0x5141 28976 bytes
font_01_sfnt_off00009453.bin
963bd5e19a6c06905dd76792d3d3e727f2a484898d0767df4d0e94f2e877a4a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x9453 4200 bytes
font_02_sfnt_off0000a221.bin
c34d5bbac5d2e04517046b3e28e8f7f44b3cbb6c55b3840d0d66c1d1cf1b9dc4
pdf-font-stream PDF embedded font (sfnt) at offset 0xA221 19460 bytes