Malicious PDF — malware analysis report

Static analysis result for SHA-256 3257563c37eb1d2a…

MALICIOUS

PDF

44.5 KB Created: 2021-05-11 06:06:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: bdd79f0c0053b3c37d55ff838f5a2e16 SHA-1: 890088f05332dfd2571428afb906965cb1082343 SHA-256: 3257563c37eb1d2a8d3558a6a39da137236cdd136eed1286253808c569dacb19
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 0.9632

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 https://netcdn.xyz/app/406889139/daily-free-spin-coin-master-link-game-hack PDF link annotation
    • http://perpustakaan.ipts.ac.id/repository/games-like-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/roblox-free-skin_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/coin-master-hacks-for-pet-food_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/robuxglobalcom-no-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/unlimited-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/how-to-get-to-village-3-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/best-free-spins-link-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/coin-master-hack-no-verify_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/minecraft-windows-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/minecraft-windows-10-mod-menu_GM479516143.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/aimbot-download-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/mcpe-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048c1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48C1 25116 bytes
SHA-256: 095dcfc08e4c0a759349fd9cd76020ba2df7d9b04cd384797c34ba3a1c22519c
font_01_sfnt_off00008129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8129 2824 bytes
SHA-256: 381f6d859be141449dd645f7be1484d2a1cf49218dc471b402dae69eaa2b11d5
font_02_sfnt_off00008acc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ACC 18476 bytes
SHA-256: 13087f23ced5a654764a402ace47e06b7ceeb886891228a443e0cb07dd9c4176

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