Malicious PDF — malware analysis report

Static analysis result for SHA-256 be060d4fa233086b…

MALICIOUS

PDF

42.4 KB Created: 2021-05-14 11:36:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5edf15043848e71c2f33de61be195091 SHA-1: ff7e950ec72563a18813a7d7e68a2d02a52552dc SHA-256: be060d4fa233086b0810cc43f4e8c9d70cb2fe625ff0d319a5310dadbaaeb214
102 Risk Score

Malware Insights

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

The document uses a lure related to free spins for the game Coin Master and requests sensitive information such as private keys or recovery secrets, indicating a phishing or credential harvesting attempt. The embedded URL and numerous other URLs point to external resources, likely for downloading further malicious content or redirecting to phishing sites. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-free-spins-gratis-game-hack
    • https://ayobali.id/new/public/ckfinder/userfiles/files/minecraft-server-free-trial_GM479516143.pdf
    • https://ayobali.id/new/public/ckfinder/userfiles/files/real-coin-master-hack_GM406889139.pdf
    • https://ayobali.id/new/public/ckfinder/userfiles/files/free-spins-coin-master-without-survey_GM406889139.pdf
    • https://ayobali.id/new/public/ckfinder/userfiles/files/roblox-inappropriate-games_GM431946152.pdf
    • https://ayobali.id/new/public/ckfinder/userfiles/files/free-coin-master-links_GM406889139.pdf
    • https://ayobali.id/new/public/ckfinder/userfiles/files/free-coin-master-coins_GM406889139.pdf
    • https://ayobali.id/new/public/ckfinder/userfiles/files/how-to-get-1-million-robux-for-free-2021_GM431946152.pdf
    • https://ayobali.id/new/public/ckfinder/userfiles/files/coin-master-spin-blogspot_GM406889139.pdf
    • https://ayobali.id/new/public/ckfinder/userfiles/files/robux-hack-no-human-verification_GM431946152.pdf
    • https://ayobali.id/new/public/ckfinder/userfiles/files/hack-coin-master-apk-2021_GM406889139.pdf
    • https://ayobali.id/new/public/ckfinder/userfiles/files/game-hunters-coin-master_GM406889139.pdf
    • https://ayobali.id/new/public/ckfinder/userfiles/files/microsoft-bing-robux_GM431946152.pdf
    • https://ayobali.id/new/public/ckfinder/userfiles/files/free-coins-for-coin-master-blogger_GM406889139.pdf
    • https://ayobali.id/new/public/ckfinder/userfiles/files/coin-master-hack-unlimited-spins-apk_GM406889139.pdf
    • https://ayobali.id/new/public/ckfinder/userfiles/files/minecraft-free-download-iphone_GM479516143.pdf
    • https://ayobali.id/new/public/ckfinder/userfiles/files/coin-master-gold-cards-free_GM406889139.pdf
    • https://ayobali.id/new/public/ckfinder/userfiles/files/archery-master-3d-apk-and-mod-free-download-unlimited-coins_GM406889139.pdf
    • https://ayobali.id/new/public/ckfinder/userfiles/files/free-robux-groups-2021_GM431946152.pdf
    • https://ayobali.id/new/public/ckfinder/userfiles/files/free-robux-easy_GM431946152.pdf
    • https://ayobali.id/new/public/ckfinder/userfiles/files/coin-master-download-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004be4.bin
a6c92d536e67245dd0e16e869f523de110a584f8dcf0ad3bef2531530e24d2ed
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BE4 24552 bytes
font_01_sfnt_off0000849a.bin
61e0f30a550a552155c2db6a7959ee396d6a34ca680bb4676c065f633eb1cbfa
pdf-font-stream PDF embedded font (sfnt) at offset 0x849A 17884 bytes