Malicious PDF — malware analysis report

Static analysis result for SHA-256 902c8c90bbe5c9ad…

MALICIOUS

PDF

34.4 KB Created: 2021-06-27 13:13:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 8e10aab797e9785a4620b997217e2d91 SHA-1: 503faacd115e0b6770422521324bf9c95e1649d0 SHA-256: 902c8c90bbe5c9adbd7afe3a57b933b1453138a689de7dc75395e23200b01894
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, including one pointing to a 'roblox-free-draw-2-game-hack'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to attract traffic or distribute malicious content. The ML classifier also flagged this PDF as malicious with high confidence. The presence of embedded URLs and the link farm heuristic strongly suggest this document is part of a phishing or malware distribution scheme.

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-free-draw-2-game-hack PDF link annotation
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/scary-larry-roblox_GM431946152.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/rape-simulator_GM431946152.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/chisel-and-bits-mod-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/extra-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/get-2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verification-on-ios_GM431946152.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/2021-roblox_GM431946152.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/play-roblox-for-free-on-google_GM431946152.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/coin-master-coin-hack_GM406889139.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/earn-robux-today-free-wall_GM431946152.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/roblox-sad-cheat-story_GM431946152.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/coin-master-hacks-for-iphone_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

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
font_00_sfnt_off00002fe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE1 22120 bytes
SHA-256: 523f6afe24c49851dda3762c7560529495a9c704996d9d3e239e6821dd950453
font_01_sfnt_off00006117.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6117 19104 bytes
SHA-256: 643568ddd03b6e8761ba1f0e6cd909ae992a07cc625c8856ed9e055e03041ffc

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