Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d85c7d459d04f05…

MALICIOUS

PDF

35.1 KB Created: 2021-07-04 19:43:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f26e0d7167dcb886dcec1e2d8b53f420 SHA-1: d6d2855843a64745ef3d0f6adc7fbff02ba28e4c SHA-256: 1d85c7d459d04f05d75243a729edcabd5627ab413e903cd220f784ecf51d059a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/free-coins-spins-on-coin-master-game-hack PDF link annotation
    • http://fkunismuh.org/perpustakaan/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-hack-people-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-free-hats-and-gear_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-spin-blogspot_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/hackspw-robux_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/toolbox-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/cheating-explioting-in-the-condo-roblox_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/1-million-free-robux-landon_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-hack-apk-online_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-use-free-models-on-roblox_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/tiktok-free-real-fans_GM835599320.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-34-5-hack_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_off00003314.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3314 23060 bytes
SHA-256: dba557b648934f6baa363ff3b4e967dd59dd862339954a85eda35cabebd77d2c
font_01_sfnt_off00006708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6708 18176 bytes
SHA-256: c5238e13390a97467cde097dbe7f4adee10234cfd48eaefab3fd38a64812b74c

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