Malicious PDF — malware analysis report

Static analysis result for SHA-256 fea53c8c55cfcd0d…

MALICIOUS

PDF

44.6 KB Created: 2021-05-15 00:34:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 240faae0c9f8c9f05335363d4859fb59 SHA-1: 359945cb149c3e0942b4cc70aff699647c537217 SHA-256: fea53c8c55cfcd0d904153af2f03fa25e21d1e7439b9758b503e13d6e3ddb7ce
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs, with a primary focus on luring users to a 'Coin Master Hack Tool' via the URL https://netcdn.xyz/app/406889139/coin-master-hack-tool-v1-9-apk-game-hack. The document's structure and heuristics indicate it's designed to exploit user interest in game cheats or free in-game currency, likely leading to a malicious download or a phishing page. No scripts were extracted, but the PDF's nature suggests it's a social engineering lure.

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/coin-master-hack-tool-v1-9-apk-game-hack PDF link annotation
    • https://www.baratravelling.com/ckfinder/userfiles/files/free-back-accessories-roblox_GM431946152.pdfIn PDF document text
    • https://www.baratravelling.com/ckfinder/userfiles/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.baratravelling.com/ckfinder/userfiles/files/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.baratravelling.com/ckfinder/userfiles/files/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.baratravelling.com/ckfinder/userfiles/files/coin-master-hack-app-link_GM406889139.pdfIn PDF document text
    • https://www.baratravelling.com/ckfinder/userfiles/files/how-to-make-a-minecraft-server-for-free-java_GM479516143.pdfIn PDF document text
    • https://www.baratravelling.com/ckfinder/userfiles/files/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.baratravelling.com/ckfinder/userfiles/files/coin-master-apk_GM406889139.pdfIn PDF document text
    • https://www.baratravelling.com/ckfinder/userfiles/files/coin-master-hack-tool-access-online-generator_GM406889139.pdfIn PDF document text
    • https://www.baratravelling.com/ckfinder/userfiles/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.baratravelling.com/ckfinder/userfiles/files/free-spins-and-coins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://www.baratravelling.com/ckfinder/userfiles/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.baratravelling.com/ckfinder/userfiles/files/coin-master-35-16-hack-apk_GM406889139.pdfIn PDF document text
    • https://www.baratravelling.com/ckfinder/userfiles/files/coin-master-free-100-spin-link_GM406889139.pdfIn PDF document text
    • https://www.baratravelling.com/ckfinder/userfiles/files/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • https://www.baratravelling.com/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://www.baratravelling.com/ckfinder/userfiles/files/is-free-robux-real_GM431946152.pdfIn PDF document text
    • https://www.baratravelling.com/ckfinder/userfiles/files/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.baratravelling.com/ckfinder/userfiles/files/roblox-hackers-list_GM431946152.pdfIn PDF document text
    • https://www.baratravelling.com/ckfinder/userfiles/files/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049d5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49D5 24776 bytes
SHA-256: cf1c3a4990ffd9d40d843ee77b0d36969e6b27193ba4e13680037c5fc9be3a1c
font_01_sfnt_off0000818a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x818A 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008b3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B3B 18368 bytes
SHA-256: f865939a9af2b291dea3e70cdd1104ac7269b105b0b8110a8e2b8e0726ed96db

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