Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cb7767af8406502…

MALICIOUS

PDF

56.5 KB Created: 2021-06-08 18:31:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9f05c721fa9df0caf5c5e325a028eafb SHA-1: d2bc21519aa5ef1aa905f97cc8c28b2b32850658 SHA-256: 9cb7767af8406502e1001a96aae78bc99bb5275c9739ca25cb355bbaf9c19a06
82 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and heuristics indicating a lure for downloading potentially malicious content, disguised as game hacks or free items. The presence of a 'payment redirection lure' heuristic suggests a potential financial scam or credential harvesting attempt. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9649

Heuristics 4

  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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/roblox-games-free-login-game-hack
    • http://www.ocic.hr/files/master-coin-hack-mod_GM406889139.pdf
    • http://www.ocic.hr/files/free-minecraft-server-hosting-24-7_GM479516143.pdf
    • http://www.ocic.hr/files/free-tiktok-likes-app_GM835599320.pdf
    • http://www.ocic.hr/files/get-free-followers-on-tiktok_GM835599320.pdf
    • https://www.ocic.hr/files/free-robux-today_GM431946152.pdf
    • http://www.ocic.hr/files/coin-master-free-spins-and-coins-2021_GM406889139.pdf
    • https://www.ocic.hr/files/coin-master-mod-apk-unlimited-spin-download-free-full-version_GM406889139.pdf
    • https://www.ocic.hr/files/free-coins-for-coin-master-blogger_GM406889139.pdf
    • https://www.ocic.hr/files/coin-master-root-hack_GM406889139.pdf
    • https://www.ocic.hr/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://www.ocic.hr/files/where-to-get-free-robux_GM431946152.pdf
    • https://www.ocic.hr/files/best-site-for-free-coin-master_GM406889139.pdf
    • https://www.ocic.hr/files/how-to-get-free-robux-instantly_GM431946152.pdf
    • http://www.ocic.hr/files/coin-master-hack-ios-no-verification_GM406889139.pdf
    • http://www.ocic.hr/files/free-roblox-gift-card-codes-2021_GM431946152.pdf
    • https://www.ocic.hr/files/coin-master-admin-free-spins_GM406889139.pdf
    • http://www.ocic.hr/files/roblox-free-accessories_GM431946152.pdf
    • http://www.ocic.hr/files/coinmasterfreespinlink_GM406889139.pdf
    • http://www.ocic.hr/files/how-do-you-earn-free-coins-for-coin-master_GM406889139.pdf
    • https://www.ocic.hr/files/free-spin-in-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050e9.bin
e24392b04540c67a9b5a2db0faa165662080f70ed4d0d8b4a3cd4f09524753a3
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50E9 42732 bytes
font_01_sfnt_off0000ac0c.bin
450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
pdf-font-stream PDF embedded font (sfnt) at offset 0xAC0C 5696 bytes
font_02_sfnt_off0000b91e.bin
ff1ddb2668ba1cdd12f8d7d6fe47fb9dfc0742e177e1ef0ea78833bab80b3e6c
pdf-font-stream PDF embedded font (sfnt) at offset 0xB91E 18844 bytes