Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeefd0ae904243c4…

MALICIOUS

PDF

34.3 KB Created: 2021-06-29 07:26:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: fe80f460ccea8c501fb338ed92423d76 SHA-1: 8c689ca35d3dd094ecbe5fbe3d2451d94dce6b70 SHA-256: eeefd0ae904243c453e507c409415bc9ef11f34c769cec74359f2afe50774e7c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to 'free Robux' and 'game hacks' to entice users to click on embedded links. The primary link, http://netcdn.co/app/431946152/how-to-claim-free-robux-games-game-hack, is identified as a redirector, suggesting it leads to a malicious site for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a malicious intent to exploit user interest in virtual currency and game 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.co/app/431946152/how-to-claim-free-robux-games-game-hack PDF link annotation
    • http://sdn4-wates.sch.id/akasia/repository/free-roblox-gift-cards-2021_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/how-to-change-name-in-roblox-free_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/coin-free-master_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/roblox-game-dev-life-hack_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/get-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/roblox-club-tesla-free_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/roblox-ban_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/real-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/coin-master-hack-tool-v1-9-apk_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-roblox-promo-codes-com_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-coin-master-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/roblox-no-verification-hack_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/how-to-get-free-robux-in-a-game-no-password_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/how-to-get-robux-hack-on-phone_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/how-to-get-roblox-robux-for-free-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/hack-robux-script_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-vip-server-roblox-battle_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_off000030b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30B4 21604 bytes
SHA-256: 240d72c0bca6df3d3241106fa55a943f5a2001e180faf7380b3a3c79bd0fc1c4
font_01_sfnt_off00006043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6043 19336 bytes
SHA-256: ab7e839d629ce910421c6ba771702324a4cc4bde56f0d40098417cce9eb181ec

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