Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9c8dbeba237d407…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 07:24:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ccde8d7533ecafd352e9a143a31cad12 SHA-1: c77deeb5d583472fcc8e87cb85b192b2e11d7748 SHA-256: d9c8dbeba237d40708e27f29bb2bef1b38756e78f5c8e4965e8c1f593d5dbfbf
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'Free Robux Gift Card Generator' and 'game hack' content, directing users to a suspicious URL. This indicates a phishing or scam attempt, likely to lead to a malicious website or download. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to exploit user interest in free in-game currency or cheats.

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/431946152/free-robux-gift-card-generator-game-hack PDF link annotation
    • http://library.umuslim.ac.id/repository/coin-master-map_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-spin-coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/hack-catalog-roblox_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/i-need-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/pro-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/mc-update_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/what-do-roblox-points-do_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/minecraft-pocket-edition-mods-for-free_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-robux-promo-codes-july-2021_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-bonus_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-jump-hack-download_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-college-textbooks-tiktok_GM835599320.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-robux-pins-2021_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-robux-without-verification-2021_GM431946152.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
font_00_sfnt_off00002ea6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA6 22500 bytes
SHA-256: 579b70f49d5b5dd907ad949e7bfd354a970d1913d7012b886157d16d9e720240
font_01_sfnt_off000060f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F6 19112 bytes
SHA-256: da31b86bd70513bc950f6f3ebef22a0e782d6f2bb4858530ba27cd7b56ad3104

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