Malicious PDF — malware analysis report

Static analysis result for SHA-256 1da52a4629f4279c…

MALICIOUS

PDF

251.5 KB Created: 2021-07-05 22:31:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 29d7b7183cbcf68409fff2728938a009 SHA-1: 70111493d9bd4455957d5cbfe6cf864a25a9db8a SHA-256: 1da52a4629f4279c6c177cfab56a6451ad4acfed980ff904d4573682791c02e7
140 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a phishing or scam lure, including fake CAPTCHA, urgency, advance-fee, and MFA harvesting prompts. It contains an embedded URI pointing to a suspicious URL, likely intended to lead the user to a malicious site or download. No scripts were extracted, but the presence of these lures strongly suggests a malicious intent to deceive the user.

Machine Learning

  • Nyx PDF Classifier clean score 0.0098

Heuristics 7

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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 http://netcdn.tw/app/1330123889/pubg-uc-zarna-game-hack
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/free-spins-and-coins-for-coin-master-game_GM406889139.pdf
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/youtube-free-robux-2021_GM431946152.pdf
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/free-coin-master-spins-2021-link_GM406889139.pdf
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/haktuts-coin-master-free-daily-spins_GM406889139.pdf
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/free-robux-win-2021_GM431946152.pdf
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/minecraft-hacks-for-2b2t_GM479516143.pdf
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/coin-master-free-spins-2021_GM406889139.pdf
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/coin-master-daily-free-spins-and-coins_GM406889139.pdf
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/alt-tab-hack-roblox_GM431946152.pdf
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/minecraft-hack-mod_GM479516143.pdf
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/free-college-textbooks-tiktok_GM835599320.pdf
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/rblx-city-free-robux_GM431946152.pdf
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/hack-to-send-gold-cards-on-coin-master_GM406889139.pdf
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/how-to-hack-admin-commands-on-roblox-no-injector_GM431946152.pdf
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/coin-master-gold-cards-free-2021_GM406889139.pdf
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/robuxy-com-free-robux_GM431946152.pdf
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/coin-master-free-coins-and-spins-link_GM406889139.pdf
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/new-roblox-hack-download_GM431946152.pdf
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/minecraft-free-online_GM479516143.pdf
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/cheat-roblox-lumber-tycoon-2-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_024_off00038210.bin
07feff7896d644d2d1a9c803d3268e102df69ab5b8037f80fa74fc431a72d7d3		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x38210 25928 bytes
font_01_sfnt_off0003bf2b.bin
2bfbf32682697c5f35470d06c08021bd4a896be7ab151281d06202002742bd11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3BF2B 18220 bytes

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