Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc3ab6cb8c0a4d5a…

MALICIOUS

PDF

41.9 KB Created: 2021-05-19 00:33:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 11c4282b792859f4dab6ec9116006709 SHA-1: d1961f00f313e4dda6bbbd56cd7c6f290aef78da SHA-256: fc3ab6cb8c0a4d5a857b29b00bb437d4aa38d0976384afa59df7cdd9ef2b0e11
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to websites offering 'free generators' or 'game hacks', a common lure for phishing or malware distribution. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an intent to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/master-free-spin-and-coin-link-game-hack PDF link annotation
    • http://aleshashop.net/uploaded_files/userfiles/files/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/minecraft-java-account-free_GM479516143.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/150-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/hack-version-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/minecraft-free-install_GM479516143.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/how-to-get-minecraft-bedrock-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-robux-games_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/master-coin-hack-game_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/coin-master-hacks-for-spins_GM406889139.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
stream_003_off00004947.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4947 24584 bytes
SHA-256: 49c51821862c965710075f98635b949445d54ee640b8066694849685af33733a
font_01_sfnt_off00008185.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8185 18228 bytes
SHA-256: 4b57acba41aa68bb280b2f656de6400654b723400b96e238fbc94aea55036d0e

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