Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f708edfe043c286…

MALICIOUS

PDF

35.0 KB Created: 2021-07-05 22:00:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 58f316a4699b3ba4cf2142eba82d93cf SHA-1: ee7cbbd8fe3371f10ab6a7b0b210d9af904d37a0 SHA-256: 1f708edfe043c286e80f215120ad39eae898dc0b59ccefb6431fcebee9595871
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/coin-master-free-spins-2-5-2021-game-hack PDF link annotation
    • http://perpustakaan.poltekom.ac.id/repository/daily-coin-master-free-spin-link-facebook_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/coin-master-free-chip_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/wwwroblox-cheatgdn_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/clean-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/roblox-seven-deadly-sins-online-script-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/how-to-get-level-200-hack-gears-online-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/free-game-pack-with-google-play-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/optifine-mcpe_GM479516143.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/i-want-to-grow-my-account-tiktok-free_GM835599320.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/roblox-free-play-at-school_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/free-adidas-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/roblox-free-clothes-codes-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_off0000319a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x319A 22828 bytes
SHA-256: 78ac1b0fa3c2ef91d422567eb7931151afb9c01398badb27f60f4135b0d38772
font_01_sfnt_off00006486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6486 18712 bytes
SHA-256: 7cd48612045133ae85d6d1198e83582e127e1d3e6c66f6f02a894a96902def28

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