Malicious PDF — malware analysis report

Static analysis result for SHA-256 52a84be54a3bf7b7…

MALICIOUS

PDF

34.5 KB Created: 2021-07-01 07:18:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b24446df3cec1fb52ca69b689084b96a SHA-1: fdf5ff5a1cc0257c06cb8d4c7bb940b83f62bbef SHA-256: 52a84be54a3bf7b72c85761339151d21a37194fd01b9f77f9a3d5c8f0fd7ca32
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a large number of external links, many of which are presented as 'hacks' or 'cheats' for popular games. The ML classifier and PDF heuristics strongly indicate malicious intent, likely to trick users into downloading malware. The document body and extracted URLs suggest a lure for game-related exploits, potentially leading to the execution of further malicious payloads.

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 http://netcdn.co/app/431946152/roblox-hack-free-robux-and-membership-hackaron-game-hack PDF link annotation
    • http://mtsn-baranti.com/perpus/repository/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-hack-2021-redeem-card-codes_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-el-tiger-card-free_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/sk8er-download-roblox-hack_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-hack-online-link_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-verified-on-tiktok-for-free-2021_GM835599320.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hack-weight-lifting-simulator-2-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-robux-without-going-on-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hack-coin-master-2021-pc_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hacked-warning-roblox-id_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-roblox-shirt-in-game_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-spins-2021-apk_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/youtube-how-to-get-free-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_off00003198.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3198 21216 bytes
SHA-256: 62d63961d17f96ed906cc28ebccecbbeaaad946ab6b80546a47abe787514a6ba
font_01_sfnt_off00005f74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F74 19924 bytes
SHA-256: d3cdab6692e69e472575ae44554147b0e07ce308401701353535a7774c2e954e

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