Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea1c0566c426a3ee…

MALICIOUS

PDF

40.9 KB Created: 2021-05-15 22:36:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f783492a3c9d54df20d6416db258cb9e SHA-1: c5dee61e2bcf283f4865d0359e2300a98e6144fe SHA-256: ea1c0566c426a3eebd7ed77607f045654fc5a8867fe01fc9a181c2d0a0ec25cf
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are structured as SEO-optimized PDF slugs related to game hacks and cheats. The presence of a 'download button' heuristic and the ML classifier's high confidence score indicate malicious intent. The document body, though partially corrupted, contains references to game hacks and a URL, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/free-coin-master-hacks-game-hack PDF link annotation
    • http://ilifemarket.ru/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://ilifemarket.ru/images/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://ilifemarket.ru/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://ilifemarket.ru/images/minecraft-free-download-android-apk-014-0_GM479516143.pdfIn PDF document text
    • http://ilifemarket.ru/images/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://ilifemarket.ru/images/is-roblox-hacked_GM431946152.pdfIn PDF document text
    • http://ilifemarket.ru/images/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://ilifemarket.ru/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://ilifemarket.ru/images/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://ilifemarket.ru/images/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
    • http://ilifemarket.ru/images/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • http://ilifemarket.ru/images/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://ilifemarket.ru/images/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://ilifemarket.ru/images/is-minecraft-free-on-ps4_GM479516143.pdfIn PDF document text
    • http://ilifemarket.ru/images/coin-master-facebook-free-spins_GM406889139.pdfIn PDF document text
    • http://ilifemarket.ru/images/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://ilifemarket.ru/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://ilifemarket.ru/images/http-blackgamesus-coinmasterhack_GM406889139.pdfIn PDF document text
    • http://ilifemarket.ru/images/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • http://ilifemarket.ru/images/how-to-get-free-robux-without-email_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_003_off000046c5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46C5 24356 bytes
SHA-256: 9fe22ec071eef23679145414feed2231098d47645b9b83393e3bc860714a1313
font_01_sfnt_off00007ebd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EBD 17880 bytes
SHA-256: e9d83edb2e1b044691ef11a4057c4d6cc11a4a50971021398c2c06fbe5537458

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