Malicious PDF — malware analysis report

Static analysis result for SHA-256 a29e4fa5aa11456f…

MALICIOUS

PDF

58.4 KB Created: 2021-06-03 07:56:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5001b4bf63ce1c2d208ea7d6617838f9 SHA-1: f2018f78793fc1b6c5b1379d01bcf4e1afa2fe3e SHA-256: a29e4fa5aa11456fedab37ffc8a7e300d2b37d50643e5e0423fbbd4c947cc729
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'Free Robux' and links to external URLs, including one that appears to be a redirector for game hacks. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the presence of embedded URLs and the nature of the lure suggest a phishing or scam attempt, likely leading to a malicious website that could download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9717

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 https://netcdn.online/app/431946152/free-robux-without-human-verification-game-hack PDF link annotation
    • http://library.gkigadingserpong.org/repository/best-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/haktuts-free-spins_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-disney-plus-accounts-tiktok_GM835599320.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-mast-hacks_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-website_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-app_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/earn-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/tiktok-free-wala_GM835599320.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53DE 30492 bytes
SHA-256: 1e5d61fcf8d0b3ef2c2d19c122a0ffd27959b054e1ba545bae38fcceae31d89a
font_01_sfnt_off00009818.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9818 12800 bytes
SHA-256: 101f6334f34a1af3279f2f5abd84d35f0880b215ceba589c816f962dafffd9db
font_02_sfnt_off0000bff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFF5 19224 bytes
SHA-256: 69162c0303826e3a88150cee7b6b12b50ba56e04bc46253c0e5eb9f80ac8a399

Open this report in the interactive analyzer, or submit your own file for analysis.