Malicious PDF — malware analysis report

Static analysis result for SHA-256 4140c8528af61cd3…

MALICIOUS

PDF

229.5 KB Created: 2021-07-06 21:40:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 91e5921eba550272db0ae9f56af0fac3 SHA-1: a72ffb4f88e9a5413cd17d2b340328a3045e6a64 SHA-256: 4140c8528af61cd362ee393d9c423006bd5ce75f66bc54a772d2fcfaf749e32e
132 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating it displays a fake CAPTCHA and a visual download button, common social engineering tactics to lure users into installing malicious software or extensions. The document body, though heavily obfuscated, references 'Pokemon Go' and includes a URL pointing to a potential game hack, further supporting the lure. The presence of external URIs suggests the document is designed to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0101

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-free-to-play-game-hack
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/how-to-code-a-script-hack-for-roblox_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/coin-master-free-cards-link-2021_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/free-spins-on-coin-master-links-2021_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/coin-master-free-spins-hack-2021_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/coin-master-hack-with-lucky-patcher_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/coin-master-hack-generator-tool_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/coin-master-free-spin-and-coin_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/how-to-hack-roblox-on-mobile_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/minecraft-pe-free-download_GM479516143.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/free-robux-ad_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/huskybuscom-free-robux_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/coin-master-hack_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/coin-master-free-cards-hack_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/haktuts-coin-master-free-spin-link-today_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/minecraft-free-online_GM479516143.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/free-coin-master-spins-link_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/how-to-get-free-robux-without-paying_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/how-to-get-more-spins-on-coin-master-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_024_off0003296b.bin
65a167e5330f1d7f8a973532f226997ecfae14bd249ee67c8b14f1fff3462cbf		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3296B 26008 bytes
font_01_sfnt_off00036637.bin
6b7c2836de8567b3de89f693560cfbcca992fb532efd22075dad47e70d1d98d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x36637 18612 bytes

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