Malicious PDF — malware analysis report

Static analysis result for SHA-256 458e3a0dd89709bc…

MALICIOUS

PDF

227.7 KB Created: 2021-07-03 11:42:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 83fcd50d53033161c66cfcc2375272ad SHA-1: cdd3d3da81c5cda3cadcd4ee7dfac5efbb1e90e7 SHA-256: 458e3a0dd89709bc29d959051de785b55f32d06881865595c73e07c06cada926
172 Risk Score

Malware Insights

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

The PDF document employs social engineering tactics, presenting a fake CAPTCHA and a 'game hack' lure to trick users into clicking malicious links. The primary link, http://netcdn.tw/app/1094591345/pokemon-go-free-0-iv-game-hack, is likely intended to download a second-stage payload or redirect to a phishing site. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate a malicious intent to exploit user curiosity for credential theft or malware distribution.

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-0-iv-game-hack PDF link annotation
    • http://www.pspmrsmmbk.com/cendana/repository/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/hack-de-sexo-roblox-tutorial_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/microsoft-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-roblox-aim-bot_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/roblox-rocitizens-free-money-codes_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-redeem-robux-codes_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/roblox-servers-that-give-free-robux-march-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/minecraft-java-edition-free-code_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/coin-master-free-chest-link_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/coin-master-official-website_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/hang-hack-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/coin-master-apk_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_023_off00032324.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32324 25576 bytes
SHA-256: 4e6090158ceeb3f323036713e2b92c307ffc6d1cc4247d1f315787e67306e472
font_01_sfnt_off00035f2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35F2B 18644 bytes
SHA-256: a071a09f32517df9eee6ad55f8045cb3fd5e280e347349572fdee79abad001d9

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