Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b380feac380575e…

MALICIOUS

PDF

45.7 KB Created: 2021-05-19 00:01:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3766a3bd7095efe88500519a1a0c6fd7 SHA-1: 9bccf22d5c83ad29b5ecb3d33b67f2f9cb3ccf6f SHA-256: 7b380feac380575e2d82f73346bc4f8136edb27cc683e6efc075f5d265baac06
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple embedded URLs that lead to pages offering game hacks and free currency, indicating a lure for users to download potentially malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to trick users into executing a second-stage payload. The presence of urgency and download button lures further reinforces this phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/835599320/tiktok-free-view-jio-phone-game-hack
    • https://elearning-min2jakpus.sch.id/__statics/gudangsoal/files/coin-master-free-spin-app-apk_GM406889139.pdf
    • https://www.elearning-min2jakpus.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy-no-download_GM431946152.pdf
    • https://elearning-min2jakpus.sch.id/__statics/gudangsoal/files/uprobuxcom-free-robux_GM431946152.pdf
    • https://www.elearning-min2jakpus.sch.id/__statics/gudangsoal/files/master-coin-hack_GM406889139.pdf
    • https://www.elearning-min2jakpus.sch.id/__statics/gudangsoal/files/roblox-how-to-get-free-clothes_GM431946152.pdf
    • https://www.elearning-min2jakpus.sch.id/__statics/gudangsoal/files/free-coin-spin_GM406889139.pdf
    • https://elearning-min2jakpus.sch.id/__statics/gudangsoal/files/minecraft-wurst-client_GM479516143.pdf
    • https://elearning-min2jakpus.sch.id/__statics/gudangsoal/files/games-that-can-be-hacked_GM431946152.pdf
    • https://www.elearning-min2jakpus.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-daily_GM406889139.pdf
    • https://www.elearning-min2jakpus.sch.id/__statics/gudangsoal/files/free-spins-from-coin-master_GM406889139.pdf
    • https://www.elearning-min2jakpus.sch.id/__statics/gudangsoal/files/free-gold-cards-in-coin-master_GM406889139.pdf
    • https://www.elearning-min2jakpus.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdf
    • https://elearning-min2jakpus.sch.id/__statics/gudangsoal/files/games-to-get-free-robux_GM431946152.pdf
    • https://elearning-min2jakpus.sch.id/__statics/gudangsoal/files/all-minecraft-handbooks_GM479516143.pdf
    • https://elearning-min2jakpus.sch.id/__statics/gudangsoal/files/coin-master-rewards-app_GM406889139.pdf
    • https://elearning-min2jakpus.sch.id/__statics/gudangsoal/files/robloxfun-com-robux_GM431946152.pdf
    • https://elearning-min2jakpus.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-app_GM431946152.pdf
    • https://www.elearning-min2jakpus.sch.id/__statics/gudangsoal/files/freecoins_GM406889139.pdf
    • https://elearning-min2jakpus.sch.id/__statics/gudangsoal/files/free-spins-coin-master-haktuts_GM406889139.pdf
    • https://www.elearning-min2jakpus.sch.id/__statics/gudangsoal/files/free-coins-for-planet-master-game_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a1d.bin
a532c2d51d0d3932bc917a794e35f11e929759d5429e6c53a0506a18c0daf6c5		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A1D 24496 bytes
font_01_sfnt_off00008299.bin
db7ec909c907b23088a98ecd4cd288b476f2f66785a6e3d81bc6469138abe306		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8299 4148 bytes
font_02_sfnt_off0000906f.bin
71b2a0e18e3e351bf92a90ddf6f55d27469cc78d0c91348b960f3ce81b718bf9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x906F 18240 bytes

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