Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fd853397d55fb95…

MALICIOUS

PDF

34.4 KB Created: 2021-07-03 18:46:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fb9159c768136c2b4e756336a11a374d SHA-1: d78611ebc1fbc1023bf2d2f1b5a424050e34f708 SHA-256: 8fd853397d55fb95a004baafc8ed048c529027e5684685717c2b98bb9b97ad38
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links that redirect to a malicious URL, masquerading as free game hacks or generators. The ML classifier strongly indicates maliciousness, and the PDF structure includes lures for users to click on these links. No scripts were extracted, but the primary attack pattern involves social engineering via deceptive links.

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/cm-free-spins-game-hack PDF link annotation
    • https://pfpro.de/ckfinder/userfiles/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/coin-master-free-spins-link-2021-march_GM406889139.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/how-to-get-minecraft-bedrock-for-free-with-java_GM479516143.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/minecraft-for-macbook-free_GM479516143.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/best-site-for-free-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/free-25-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/how-can-you-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/free-robux-generator_GM431946152.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/free-accessories-roblox_GM431946152.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/moonactive-coin-master_GM406889139.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/roblox-zone-free-robux_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
stream_002_off00003188.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3188 22736 bytes
SHA-256: 34b0aec7689263fb57883f05de8a4362d729bf266f3631d18a543d819921a0ac
font_01_sfnt_off00006469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6469 18188 bytes
SHA-256: 1a12182cff9cec0ebe445062587fbe6ab6d65256bbfaabe1a273c3c55968f5eb

Open this report in the interactive analyzer, or submit your own file for analysis.