Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a3c135b63a54f43…

MALICIOUS

PDF

20.6 KB Created: 2021-05-13 18:51:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 906efff4257367e6f339346f80f27da5 SHA-1: a1c25195d4f2d44c3066d9dbf1a9efa9b34cfcaa SHA-256: 4a3c135b63a54f43ad873268e28a1a05d5244a9f455258852f4623074ae372ad
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link promising free Robux, a common lure for gaming-related scams. The document body and heuristics indicate the presence of external links, including a link farm, suggesting an attempt to drive traffic to potentially malicious websites. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/how-to-make-free-robux-game-hack PDF link annotation
    • http://www.centralbarbershop.ru/images/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/fast-robux-online_GM431946152.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/coin-master-free-redeem-code_GM406889139.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/free-robux-come_GM431946152.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/coin-master-game-hacking-tricks_GM406889139.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/roblox-group-free-robux_GM431946152.pdfIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

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