Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed0e849992815153…

MALICIOUS

PDF

51.6 KB Created: 2021-06-03 18:18:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 00e8452eee29e903377e76571ac7ceeb SHA-1: ad8ebff2dc8964a71fe2a5e3f295f9fee61c15e1 SHA-256: ed0e849992815153764c4464d7f016861f28331c2221422f229785077215b83d
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9464

Heuristics 5

  • 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
  • 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 https://netcdn.online/app/431946152/get-free-robux-without-doing-anything-game-hack PDF link annotation
    • http://www.library.gkigadingserpong.org/repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-glitch-xbox-one-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/feb-23-2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-100-spin-hack_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-spin-and-win-coin-master_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-free-pets_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-unlimited-coin-master-online-tool_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/is-there-a-way-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-install-minecraft-for-free-on-ios_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/earn-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-50-spin-link_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/best-site-for-free-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/play-full-version-of-minecraft-for-free-no-download_GM479516143.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005553.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5553 29076 bytes
SHA-256: 7b7b63b515296ef9e815d41456fa8abb155ab29e5a8089ad2dd6e1c587cb71c0
font_01_sfnt_off00009725.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9725 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off0000a436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA436 19240 bytes
SHA-256: a9e3aa10522a438dd9eef37bb3e7f322f16e38379d063b4a50e22a05dda2bc13

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