Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0e3447b4dcf7188…

MALICIOUS

PDF

36.8 KB Created: 2021-07-03 14:14:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0bedff8fc21dda7dcb6209d950ab3e67 SHA-1: feffeed7c3e34845b22a1c0413a974fbafd9db2f SHA-256: f0e3447b4dcf71888af4e056e901eb6c086feec0e0efd5ae0928b65c6e6673cd
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains numerous embedded URLs and a link farm, strongly suggesting a phishing or malware distribution attempt. The document body and extracted URLs explicitly mention "free Robux" and "game hacks," indicating a lure for users seeking in-game advantages. The PDF_SEO_LINK_FARM heuristic confirms the presence of a large number of external links, likely designed to direct users to malicious sites.

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.tw/app/431946152/free-robux-without-human-verification-game-hack PDF link annotation
    • https://elearning.min3banyumas.sch.id/__statics/gudangsoal/files/roblox-synapse-x-free-key_GM431946152.pdfIn PDF document text
    • https://elearning.min3banyumas.sch.id/__statics/gudangsoal/files/roblox-mad-city-free-vip_GM431946152.pdfIn PDF document text
    • https://elearning.min3banyumas.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • https://elearning.min3banyumas.sch.id/__statics/gudangsoal/files/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • https://elearning.min3banyumas.sch.id/__statics/gudangsoal/files/play-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min3banyumas.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.min3banyumas.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-and-tix-youtube_GM431946152.pdfIn PDF document text
    • https://elearning.min3banyumas.sch.id/__statics/gudangsoal/files/how-to-hack-money-on-roblox-retail-tycoon_GM431946152.pdfIn PDF document text
    • https://elearning.min3banyumas.sch.id/__statics/gudangsoal/files/how-to-hack-srf-15-a-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.min3banyumas.sch.id/__statics/gudangsoal/files/roblox-the-rake-hack-script_GM431946152.pdfIn PDF document text
    • https://elearning.min3banyumas.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://elearning.min3banyumas.sch.id/__statics/gudangsoal/files/free-dominus-roblox-not-a-model_GM431946152.pdfIn PDF document text
    • https://elearning.min3banyumas.sch.id/__statics/gudangsoal/files/roblox-inspect-element-free-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://elearning.min3banyumas.sch.id/__statics/gudangsoal/files/roblox-cheat-engine-hot-to-get-admin_GM431946152.pdfIn PDF document text
    • https://elearning.min3banyumas.sch.id/__statics/gudangsoal/files/roblox-synapse-x-download-free_GM431946152.pdfIn PDF document text
    • https://elearning.min3banyumas.sch.id/__statics/gudangsoal/files/2021-headphones-roblox-free_GM431946152.pdfIn PDF document text
    • https://elearning.min3banyumas.sch.id/__statics/gudangsoal/files/how-to-hack-robux-on-windows_GM431946152.pdfIn PDF document text
    • https://elearning.min3banyumas.sch.id/__statics/gudangsoal/files/how-to-hack-robux-on-mobile_GM431946152.pdfIn PDF document text
    • https://elearning.min3banyumas.sch.id/__statics/gudangsoal/files/roblox-play-now-for-free-the-scary-elavator_GM431946152.pdfIn PDF document text
    • https://elearning.min3banyumas.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-chromebook_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_off000035c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35C3 23160 bytes
SHA-256: b1a16058f33fd22a4c1923048b2b15806c8eda7966ca839fd243475e1d599778
font_01_sfnt_off0000690f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x690F 19700 bytes
SHA-256: 8b14ee22fcfa25f62777b70428c8c13e08516b960c8f7fddc92c23ad02cefb37

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