Malicious PDF — malware analysis report

Static analysis result for SHA-256 00f1abc220f1711b…

MALICIOUS

PDF

226.1 KB Created: 2021-07-04 07:38:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 3433e10a0093b20ac34ec444afac8719 SHA-1: dc4a3c137c65553afee754a97115bd4ed91cdc5d SHA-256: 00f1abc220f1711b93b6c66e2f2a59f5518a429ae3807e236aa044fef9509e8d
132 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating it presents a fake CAPTCHA and a lure to install a browser extension, aiming to trick the user into downloading a payload. The embedded URL http://netcdn.co/app/1094591345/pokemon-go-free-coins-hack-game-hack likely hosts this payload. The document body, though heavily obfuscated, contains references to 'Pokemon Go Free Coins Hack', aligning with the social engineering lures.

Machine Learning

  • Nyx PDF Classifier clean score 0.0118

Heuristics 6

  • 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
  • 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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.co/app/1094591345/pokemon-go-free-coins-hack-game-hack PDF link annotation
    • https://www.anders-sofa.com.tw/uploadpic/files/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/get-free-minecraft-account_GM479516143.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/free-tiktok-followers-no-survey-or-verification_GM835599320.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/minecraft-windows-free_GM479516143.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/free-tiktok-app_GM835599320.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/pubg-uc-rate-in-india_GM1330123889.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/robux-hack-me-com_GM431946152.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/free-for-mobile-roblox_GM431946152.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/descargar-roblox-hackeado-para-android-2021_GM431946152.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/how-to-earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/how-to-get-a-free-name-change-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/old-roblox-accounts-for-free_GM431946152.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_023_off00031d53.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31D53 25576 bytes
SHA-256: d21b8a5d4b0295e7558f2ebda70ca4c2b16caa71897ed35e9eabb089fb55b78d
font_01_sfnt_off0003594a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3594A 18476 bytes
SHA-256: fc0498685c2b7a039b69ec8bd7d1ec1c5bf6c4adf6e3e90f14067ecbd4c0a967

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