Malicious PDF — malware analysis report

Static analysis result for SHA-256 d458bb15728b651c…

MALICIOUS

PDF

45.7 KB Created: 2021-05-15 00:18:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: bb5a4b6ff06c1f8ba910ffabcf6c7885 SHA-1: c3034358f9ddb98200d812da1bf60f8513617cdc SHA-256: d458bb15728b651c0d278bb203752dd23bee49777bd547bdb1591b1d84fec217
62 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a primary external URI pointing to a download location, strongly suggesting a lure for users to download an application. The presence of terms like 'Robux', 'game hack', and 'free coins' indicates a scam targeting gamers. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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 https://netcdn.xyz/app/431946152/op-rewards-robux-game-hack
    • http://www.gearestauri.it/images/free-coin-master-coins_GM406889139.pdf
    • http://www.gearestauri.it/images/minecraft-pe-free-apk_GM479516143.pdf
    • http://www.gearestauri.it/images/codes-to-get-free-robux_GM431946152.pdf
    • http://www.gearestauri.it/images/free-coin-app_GM406889139.pdf
    • http://www.gearestauri.it/images/how-to-get-gold-cards-on-coin-master-hack_GM406889139.pdf
    • http://www.gearestauri.it/images/worst-client_GM479516143.pdf
    • http://www.gearestauri.it/images/coin-master-coins_GM406889139.pdf
    • http://www.gearestauri.it/images/coin-master-rewards-app_GM406889139.pdf
    • http://www.gearestauri.it/images/best-free-robux-sites_GM431946152.pdf
    • http://www.gearestauri.it/images/robux-generator-without-verification_GM431946152.pdf
    • http://www.gearestauri.it/images/free-group-roblox_GM431946152.pdf
    • http://www.gearestauri.it/images/25-free-spins-coin-master_GM406889139.pdf
    • http://www.gearestauri.it/images/spin-and-coin-link_GM406889139.pdf
    • http://www.gearestauri.it/images/how-to-get-free-robux-app_GM431946152.pdf
    • http://www.gearestauri.it/images/coin-master-free-cards-link_GM406889139.pdf
    • http://www.gearestauri.it/images/free-robux-human-verification_GM431946152.pdf
    • http://www.gearestauri.it/images/minecraft-for-chromebook-free_GM479516143.pdf
    • http://www.gearestauri.it/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • http://www.gearestauri.it/images/coin-master-free-spins-a2z-help_GM406889139.pdf
    • http://www.gearestauri.it/images/roblox-report-hacker_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000499f.bin
deb5b6143174c1f6247edb29cfb4e296e025656d2c6b21823df92aee82c761f2
pdf-font-stream PDF embedded font (sfnt) at offset 0x499F 25228 bytes
font_01_sfnt_off000083ee.bin
49734f51977507cba6bc8d3ad0cee0363aa119856db094427deb9cf565bb7bca
pdf-font-stream PDF embedded font (sfnt) at offset 0x83EE 3120 bytes
font_02_sfnt_off00008f02.bin
61fcf6890a53ac437d28a0a1b955c1ae9fc36ec45f89f4a8c20bebee047e4314
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F02 18592 bytes