Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3a2d5ae13cbfb95…

MALICIOUS

PDF

43.9 KB Created: 2021-05-16 01:33:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 24c1de3541a6c64f6eec7d24b403d770 SHA-1: c95676a8000f270626ddbec8a1a9053acefb2ae2 SHA-256: d3a2d5ae13cbfb9530e881bf7069e84202839ea8ed3ef54a7e2950f14f78eb35
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are identified as lures for game hacks and free currency. The primary malicious URL, https://netcdn.xyz/app/431946152/free-robux-no-anti-bot-verification-game-hack, is directly linked to the lure. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a potential for JavaScript execution (T1059.007) to facilitate redirection or further payload delivery, consistent with a phishing or social engineering attack vector (T1566.001).

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/free-robux-no-anti-bot-verification-game-hack PDF link annotation
    • http://libnh.stikesnh.ac.id/repository/coin-master-unlimited-spin-hack_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/hack-coin-master-download-ios_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/demon-roblox_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-robux-website_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/spin-coin_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-free-spins-link-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-free-spins-and-coins-group_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/best-free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-daily-free-spins-and-coins-2021_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_off00004ab5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AB5 27108 bytes
SHA-256: 9b3db3ddb8ac0c33cb45fed22819fb799a8c5c07ceeb6b53fe5e9bfc0877253b
font_01_sfnt_off0000887c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x887C 18600 bytes
SHA-256: 8cfd8c2479ee29cd4f6dba9b0ab7f96f8a0f4a4bb194f6119df547073888af7b

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