Malicious PDF — malware analysis report

Static analysis result for SHA-256 c26a2d35e93e1d7d…

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 06:01:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 56359bea4cae39d659257e85443905ff SHA-1: 187ecbda5f3571ba3e249adc9a056671615480f0 SHA-256: c26a2d35e93e1d7d5247cfdfe19d4528adaab0f4a8c9dea5f3cf90b2233bd65b
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/479516143/how-to-use-redstone-game-hack PDF link annotation
    • https://perpustakaan.itda.ac.id/repository/free-robux-glitch-2021-pc_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robux-june-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robux-and-builderclub_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/como-ponerse-hack-en-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/robloxbux-us-generator_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-free-account-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-cheats-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-spin-redeem-code_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/pubg-uc-logo-png_GM1330123889.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/code-for-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/slx-hack-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/add-to-roblox-free-gear_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robux-clothes_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-super-power-training-simulator-token-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/what-is-a-minecraft-client_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/www-free-robux-com_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-spin-and-coin-blogspot_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/online-generator-roblox-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-vip-server-roblox-booga-booga_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_off00002f73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F73 22448 bytes
SHA-256: 1d78f4085da90d9190ada5c52062703b09a61c8171dc51e4889c9e8731397ef9
font_01_sfnt_off00006127.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6127 18400 bytes
SHA-256: 8a198e1e9864b91c1b5565f58586ff873331d1eac158ce45a3b769fb78f5fc68

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