Malicious PDF — malware analysis report

Static analysis result for SHA-256 8441601d9d503b6e…

MALICIOUS

PDF

35.8 KB Created: 2021-07-07 15:43:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 20b4f0543d95822cc587ed3ee88a647d SHA-1: d5c53172bc6e69122253573345849f41cf7d5ca7 SHA-256: 8441601d9d503b6e820ca87125df27dd1c325eb03bf27a0edce67e0f8ca7b6ce
62 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a prominent external URI pointing to a site advertising game hacks. The ML classifier strongly flagged this PDF as malicious, and the presence of download lures and callback phishing elements further supports a malicious intent. The document likely serves as a lure to download a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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 http://netcdn.tw/app/431946152/roblox-btool-hack-ultmate-game-hack
    • https://elearning.mtsn2bogor.web.id/__statics/gudangsoal/files/free-unredeemed-robux-gift-card-codes_GM431946152.pdf
    • https://elearning.mtsn2bogor.web.id/__statics/gudangsoal/files/free-minecraft-account-reddit_GM479516143.pdf
    • https://elearning.mtsn2bogor.web.id/__statics/gudangsoal/files/calliu-hack-roblox_GM431946152.pdf
    • https://elearning.mtsn2bogor.web.id/__statics/gudangsoal/files/guess-the-emoji-roblox-cheats_GM431946152.pdf
    • https://elearning.mtsn2bogor.web.id/__statics/gudangsoal/files/hack-para-jailbreak-roblox-2021-money_GM431946152.pdf
    • https://elearning.mtsn2bogor.web.id/__statics/gudangsoal/files/infinite-robux-hack-2021_GM431946152.pdf
    • https://elearning.mtsn2bogor.web.id/__statics/gudangsoal/files/minecraft-noob-vs-pro-vs-hacker_GM479516143.pdf
    • https://elearning.mtsn2bogor.web.id/__statics/gudangsoal/files/how-to-download-minecraft-for-free_GM479516143.pdf
    • https://elearning.mtsn2bogor.web.id/__statics/gudangsoal/files/op-rewards-roblox-hack_GM431946152.pdf
    • https://elearning.mtsn2bogor.web.id/__statics/gudangsoal/files/free-spin-coin-master-game_GM406889139.pdf
    • https://elearning.mtsn2bogor.web.id/__statics/gudangsoal/files/is-it-possible-to-hack-coin-master_GM406889139.pdf
    • https://elearning.mtsn2bogor.web.id/__statics/gudangsoal/files/roblox-download-apk-hack_GM431946152.pdf
    • https://elearning.mtsn2bogor.web.id/__statics/gudangsoal/files/is-free-robux-real_GM431946152.pdf
    • https://elearning.mtsn2bogor.web.id/__statics/gudangsoal/files/coin-master-2021-free-spins-link-2021_GM406889139.pdf
    • https://elearning.mtsn2bogor.web.id/__statics/gudangsoal/files/coin-master-hack-tool-for-pc_GM406889139.pdf
    • https://elearning.mtsn2bogor.web.id/__statics/gudangsoal/files/kuso-icu-roblox-hack_GM431946152.pdf
    • https://elearning.mtsn2bogor.web.id/__statics/gudangsoal/files/roblox-free-wings_GM431946152.pdf
    • https://elearning.mtsn2bogor.web.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verification_GM431946152.pdf
    • https://elearning.mtsn2bogor.web.id/__statics/gudangsoal/files/how-to-pubg-uc-carding_GM1330123889.pdf
    • https://elearning.mtsn2bogor.web.id/__statics/gudangsoal/files/roblox-free-robux-com_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000335f.bin
a10d23ed14e0e3665d5a0c21056d2c591cd424731984dafefc3b93282ca5e70d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x335F 22956 bytes
font_01_sfnt_off000066da.bin
c60b95367f99284718c3209a81ee9d45fbe16fe0d288eb7eea47ff30ebeae73b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66DA 19020 bytes

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