Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aceef1440b0ecfb…

MALICIOUS

PDF

35.8 KB Created: 2021-06-28 03:22:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 554e3832ebb0df27f3880f469deedc91 SHA-1: 84fcc20fba5e98c898244e9fa5d0056e24a55fd2 SHA-256: 7aceef1440b0ecfb09e9777065c3a8f2d88c6c5894a8f89f18211ba07fda27c5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link and text related to game cheats and hacks, specifically for Roblox. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' confirms this lure. The embedded URLs, such as http://netcdn.co/app/431946152/roblox-rocitizens-money-cheats-game-hack, likely lead to a malicious download or a phishing page designed to steal credentials or deliver malware. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to trick the user into downloading a payload.

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/roblox-rocitizens-money-cheats-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id//repository/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux-on-roblox-with-builders-club_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/cheat-pet-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-the-rarest-item-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-generator_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-2021-without-verification_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-cheat-engine-august-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-gift-card-codes-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-redeem-card-pin-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-apk-35-13_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-maid-paintball-2-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-sued_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-name-changer-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-sexually-abused_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-version_GM406889139.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_off000033b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33B0 22696 bytes
SHA-256: d4c16d4c9f80b942851fcb1c3424f6045e2ffc7f27e4ee221444c3bb5f259c35
font_01_sfnt_off00006605.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6605 19332 bytes
SHA-256: 63c7d5c15ef3210b700bdafe00a2dc7538a3d075ddb73c24ff005ec497b3900f

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