Malicious PDF — malware analysis report

Static analysis result for SHA-256 1659acac40c4d130…

MALICIOUS

PDF

45.1 KB Created: 2021-05-11 03:37:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8bbb38c41f7cc749fef7603f7ce30d62 SHA-1: ab23073fc9aadaca51bf0b93e956973d2ac513a8 SHA-256: 1659acac40c4d130030cc1baa66b2f11a4745d19af07820c45f0ddc7c89a7edf
62 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs pointing to external resources, many of which are raw IP addresses, suggesting a phishing or malware distribution attempt. The ML classifier also flagged this PDF as malicious with high confidence. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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.xyz/app/406889139/coin-master-gameplay-game-hack
    • http://202.182.59.89/perpus//repository/free-spins-on-coin-masters_GM406889139.pdf
    • http://202.182.59.89/perpus//repository/coin-master-ios-hack-download_GM406889139.pdf
    • http://202.182.59.89/perpus/repository/free-spins-and-coins-on-coin-master_GM406889139.pdf
    • http://202.182.59.89/perpus//repository/rbx-roblox-robux_GM431946152.pdf
    • http://202.182.59.89/perpus//repository/robux-free-2021_GM431946152.pdf
    • http://202.182.59.89/perpus/repository/no-scam-free-robux_GM431946152.pdf
    • http://202.182.59.89/perpus/repository/how-do-you-get-free-robux-2021_GM431946152.pdf
    • http://202.182.59.89/perpus/repository/free-coin-spin_GM406889139.pdf
    • http://202.182.59.89/perpus/repository/free-roblox-pin-codes_GM431946152.pdf
    • http://202.182.59.89/perpus//repository/coin-master-computer-hack_GM406889139.pdf
    • http://202.182.59.89/perpus/repository/coin-master-daily-free-spins-link-today-2021-free_GM406889139.pdf
    • http://202.182.59.89/perpus//repository/hack-roblox-players_GM431946152.pdf
    • http://202.182.59.89/perpus//repository/coin-master-free-spin-group_GM406889139.pdf
    • http://202.182.59.89/perpus/repository/i-want-free-robux_GM431946152.pdf
    • http://202.182.59.89/perpus/repository/free-minecraft-server-hosting-with-plugins_GM479516143.pdf
    • http://202.182.59.89/perpus//repository/free-minecraft-accounts-2021_GM479516143.pdf
    • http://202.182.59.89/perpus//repository/hack-master-coin_GM406889139.pdf
    • http://202.182.59.89/perpus//repository/rewardrobux-com_GM431946152.pdf
    • http://202.182.59.89/perpus/repository/coin-master-free-spins-cheat-deutsch_GM406889139.pdf
    • http://202.182.59.89/perpus/repository/coin-master-hack-app-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047e5.bin
b13003a0df4d91e05f43e544a2f72cd64cf79b81336a8ee3db94307989339cac
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47E5 25800 bytes
font_01_sfnt_off00008428.bin
3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
pdf-font-stream PDF embedded font (sfnt) at offset 0x8428 2840 bytes
font_02_sfnt_off00008dd9.bin
ad3c54622fe5860f441fa157cfd09fdd7391131bf21229add7d3bdfc0c26f4fb
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DD9 18236 bytes