Malicious PDF — malware analysis report

Static analysis result for SHA-256 196f559fb8a073df…

MALICIOUS

PDF

34.3 KB Created: 2021-06-26 00:45:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 14a2b61331de7b6efb429eb455277e5c SHA-1: 0940412ed001aa33fbb2e3d2284d66df266ea5b6 SHA-256: 196f559fb8a073df084d2d8f3e5c60af1f7458bc3a976195416393d4239c52f7
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous links to external websites, many of which are hosted on educational domains but appear to be part of a link farm designed to attract users searching for game cheats and hacks. The primary external URL, http://netcdn.co/app/431946152/roblox-dll-hacks-2021-game-hack, likely serves as a download point for malicious content. The presence of a PDF_SEO_LINK_FARM heuristic indicates a large number of external links, suggesting a deceptive tactic to distribute malware.

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-dll-hacks-2021-game-hack
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-not-a-scam_GM431946152.pdf
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/free-domain-for-minecraft-server_GM479516143.pdf
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/coin-master-free-food-for-pet_GM406889139.pdf
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/como-hackear-coin-master-sin-verificacion-humana_GM406889139.pdf
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/how-to-buy-robux-in-roblox-for-free_GM431946152.pdf
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/free-mods-for-minecraft-pe_GM479516143.pdf
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/robloxhacks_GM431946152.pdf
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/coin-master-free-spins-usa-2021_GM406889139.pdf
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/roblox-c9m_GM431946152.pdf
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/coin-master-hacks_GM406889139.pdf
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/rbx-hut_GM431946152.pdf
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/coin-master-35-13-hack-download_GM406889139.pdf
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/pop-slots-free-vegas-casino-slot-machine-game-coin-master_GM406889139.pdf
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/give-me-free-robux_GM431946152.pdf
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/coin-master-gold-cards-free_GM406889139.pdf
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/hack-tool-roblox-download_GM431946152.pdf
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/bloxawards-com-earn-free-robux_GM431946152.pdf
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-free-coins_GM406889139.pdf
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/free-robux-javascript-2021_GM431946152.pdf
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/minecraft-bedrock-free-server-hosting_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003084.bin
14c3007441039cb25e3d0c8d78731e5dfee3ed646357e0f771ac069ee03a45ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3084 21704 bytes
font_01_sfnt_off0000603b.bin
23a318c47a71926fdaeb1f7cb35c6460d664a086d85e8b774ed289323fb7d15b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x603B 19228 bytes

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