Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b8e818f134eb9be…

MALICIOUS

PDF

35.2 KB Created: 2021-07-06 12:01:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 89da04b6f21c43e9764e909ea2f19249 SHA-1: 41ab8957a64a7257cb9e98c0f920b4d982905e9f SHA-256: 0b8e818f134eb9be04601856007327fa79ee23cae674ac85c6a8fc82506e153a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'game hacks' and redirects to a suspicious URL. The ML classifier strongly indicates maliciousness. The embedded URL is likely intended to lead the user to a site that either hosts malware or attempts further social engineering, such as phishing for credentials or tricking them into downloading unwanted software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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/406889139/como-hackear-coin-master-espaol-game-hack PDF link annotation
    • http://library.gkigadingserpong.org/repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-coins-for-flip-master-online_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-spins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-free-bundles_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/earn-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-hack-spins-ios_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/cheat-codes-for-skywars-roblox-list_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/gift-card-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/what-is-the-fastest-way-to-get-xp-in-pokemon-go_GM1094591345.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-cookie-logger-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/pokemon-go-free-legendary-hack_GM1094591345.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_002_off00003204.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3204 23216 bytes
SHA-256: c6e43c0e022c206bf49bab6516dd8af9c4e72b3730e21976c42aa7b70ca59a6e
font_01_sfnt_off00006659.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6659 18516 bytes
SHA-256: 2733bbd7379f0315f5029cf6e8e3afc196c30f36adae5721920a74f68d8b4415

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