Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfe7199816007aab…

MALICIOUS

PDF

227.8 KB Created: 2021-07-09 16:35:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7485ca72c95ee158c2bb352b3462200d SHA-1: d09271b4ef687059aa3c0072f07ff1adb00e2240 SHA-256: dfe7199816007aabfb8156faa72a32946bac7e12df8d06c377f9c30f4a0a140a
132 Risk Score

Malware Insights

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

The PDF document employs social engineering tactics, including a fake CAPTCHA and a download lure, to trick users into clicking a link. The embedded URL points to a site offering free in-game items, a common pretext for malware distribution. The document's content and heuristics strongly suggest an attempt to deliver a second-stage payload or facilitate credential theft.

Machine Learning

  • Nyx PDF Classifier clean score 0.0117

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.tw/app/1094591345/pokemon-go-five-free-raid-passes-game-hack
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/free-roblox-card-codes-2021_GM431946152.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/roblox-hack-me_GM431946152.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/how-to-change-your-roblox-name-for-free-2021_GM431946152.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/10-free-spins-coin-master_GM406889139.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/apps-to-get-free-robux_GM431946152.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-2021-links_GM406889139.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/how-to-win-free-robux_GM431946152.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/daily-spin-coin-master-free_GM406889139.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/robux-hacks-no-human-verification-2021_GM431946152.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins-today_GM406889139.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/coin-master-free-spin-link-app_GM406889139.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/coin-master-free-spins-coins_GM406889139.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/unlimited-free-spins-coin-master_GM406889139.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/coinmasterfreespinlink_GM406889139.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/free-printable-minecraft-coloring-pages_GM479516143.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/tiktok-free-like_GM835599320.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-passwords_GM431946152.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/microsoft-bing-robux_GM431946152.pdf
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/free-robux-on-iphone_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_023_off00032343.bin
7109ed106f74f65f69cb5d585077ccd2f1a26a9161ee116ece46ccd84bdeefa4		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32343 25576 bytes
font_01_sfnt_off00035f4d.bin
4daf24127a258cd83fdb67aaeafa8f145c195f7dacedaebebd91f9eb209591ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x35F4D 18764 bytes

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