Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3381fc51ee9a1de…

MALICIOUS

PDF

44.1 KB Created: 2021-06-04 05:15:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 061ea45b0187bcd98c34652f66634121 SHA-1: 134c0ebfbef2a53fa4508be267ce33666fc83da9 SHA-256: f3381fc51ee9a1de09a4fcc5f1c061e2154d140901b68806242448b7ff844695
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The document body, though heavily obfuscated, contains references to 'Minecraft Book Collection' and the same URL, reinforcing the lure. The ML classifier also flagged this PDF as malicious. The primary IOC is the external URI used in the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/479516143/minecraft-book-collection-game-hack PDF link annotation
    • https://perpustakaan.itda.ac.id/repository/without-pokemon-go-free-remote-raid-pass_GM1094591345.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-many-levels-are-there-in-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/hack-version-of-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/real-robux-codes_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-premium-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-fun-free-spins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/minecraft-free-version_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-spins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/what-do-points-do-in-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-make-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-gift-links-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/pubg-uc-with-easypaisa_GM1330123889.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/appsmob-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://www.freenom.comHeyIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000531c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x531C 24548 bytes
SHA-256: 154ee8751c3bc68f794f63e0d3a429dd7f12d3006dd4384df3b03c43363dd0b9
font_01_sfnt_off00008a36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A36 18168 bytes
SHA-256: 399702d0ee70d7721e3b7d87823dce0b35203047caa5258f7323b07e9fdc19b4

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