Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ab2c15a055bbd5b…

MALICIOUS

PDF

226.8 KB Created: 2021-07-06 15:01:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 2da97470659459eefcdcdd115009045e SHA-1: d967c5299c06a827a46bb54f1da05ed1bd74517e SHA-256: 1ab2c15a055bbd5b386e275ec340cfe353d918d1aa480d49df71f007cf270050
172 Risk Score

Malware Insights

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

The PDF document contains a lure for a 'Pokemon Go Free Accounts Level 40' hack, which is a common social engineering tactic to trick users into clicking malicious links. The embedded URL points to a site offering game hacks, and the document itself displays a fake CAPTCHA or human verification prompt to further entice user interaction. This pattern suggests an attempt to deliver a second-stage payload or redirect the user to a phishing site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0118

Heuristics 7

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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-accounts-level-40-game-hack PDF link annotation
    • http://pustaka.smpmuh2yk.sch.id/repository/rare-free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/coin-master-hack-apk-facebook-login_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/coin-master-free-spins-today-new_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/where-tiktok-free-views-apk-download_GM835599320.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/roblox-script-hacks_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/tiktok-free-pictures_GM835599320.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/robux-generator_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/my-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/free-roblox-tshirts_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/minecraft-aimbot_GM479516143.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.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_off00031e69.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31E69 25576 bytes
SHA-256: d6dc4634a7a511acc1089fbe6a860b69ca86b6a5e0e670ab62c60707e0123b16
font_01_sfnt_off00035a6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35A6D 19024 bytes
SHA-256: 4ad9407809fee844f5b4eabe209197b44982228e267f4db834dfdcc06cc121c8

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