Malicious PDF — malware analysis report

Static analysis result for SHA-256 6123111cb1b2569a…

MALICIOUS

PDF

45.9 KB Created: 2021-05-19 13:44:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 3b7c54d27d6efb2792b179f92cafb3b6 SHA-1: 646e2f3cf96a27474d7bf8bbfadd553181acab81 SHA-256: 6123111cb1b2569ab519c3c739eda3e89449d0a8a5d533620a9c267aa963e0ba
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which appear to be SEO spam related to gaming and hacking. The ML classifier strongly indicated maliciousness, and the presence of embedded URIs suggests the document is designed to redirect users to potentially harmful content. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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/479516143/how-to-hack-someones-minecraft-account-game-hack PDF link annotation
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/www-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/tiktok-free-fire_GM835599320.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/free-minecraft-svg-cutting-files_GM479516143.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/coin-master-free-chest-link_GM406889139.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/coin-master-free-shield-link_GM406889139.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/free-robux-com-real_GM431946152.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/games-in-roblox-that-give-you-robux_GM431946152.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/earn-robux-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/free-robux-now_GM431946152.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/hack-coin-master-game-apk_GM406889139.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000050f8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50F8 28228 bytes
SHA-256: 3970060b560cd891eca394610082830b94a8c79cb6b80664fdd3a68e8d76a35c
font_01_sfnt_off00009110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9110 18444 bytes
SHA-256: 747c8dea613db23d983de6ff9ef757178679d17f00ac663d4d23b9711c9580c4

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