Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3096ef9eea3e8c3…

MALICIOUS

PDF

34.5 KB Created: 2021-07-03 22:19:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1e96bc1d6d2c980664754b42e1e46137 SHA-1: 6c0b2e9ad0a93cf1ba25135d81822f52c2bc07db SHA-256: c3096ef9eea3e8c3ffa32edbcfab038e683e49c852b3fde5606302dcd609b085
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 0.9980

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/431946152/roblox-hackers-list-game-hack PDF link annotation
    • http://www.producthubhob.com/uploaded_files/userfiles/files/roblox-troll-players-inject-script-hack_GM431946152.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/free-robux-no-generator-no-download_GM431946152.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/100-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/roblox-avatar-tester_GM431946152.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/roblox-hack-no-download-robux_GM431946152.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/roblox-speed-hacks-free_GM431946152.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/free-robux-mobilecom_GM431946152.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/how-to-change-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/roblox-hack-explorer-2021-6-1-2021_GM431946152.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/roblox-robux-free-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/clone-army-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/watch-ads-for-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
font_00_sfnt_off00003217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3217 21808 bytes
SHA-256: 6a2b11ac9682e773fc3811a73f35331571a6baacb485f694c38f2851495e0290
font_01_sfnt_off00006232.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6232 18880 bytes
SHA-256: 5eb0e8b2f57bc78df8f8d9e5f4bfd6a7e1b2782f5ed4f924231d74570580066d

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