Malicious PDF — malware analysis report

Static analysis result for SHA-256 62d7f0b8313ed939…

MALICIOUS

PDF

35.5 KB Created: 2021-07-08 07:36:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8a9baaf2a74e595cc8b36bc3a5d4fe57 SHA-1: 30b6bc4f98ed999d3a4faec1ce8fcb2aea0623e3 SHA-256: 62d7f0b8313ed93918fc7d0fa68a073238138dfe9f965f91b265c0cc5a6cde98
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external websites, many of which are related to obtaining free in-game currency or items for popular games like Roblox and Coin Master. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a potential attempt to drive traffic to malicious or scam-related sites. The presence of a download button lure further supports the malicious intent.

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/robux-free-c-game-hack
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/how-to-get-verified-on-tiktok-for-free_GM835599320.pdf
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-murder_GM431946152.pdf
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/2021-free-spins-coin-master_GM406889139.pdf
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/free-robux-generator-for-roblox-2021_GM431946152.pdf
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-daily_GM406889139.pdf
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/how-to-get-free-minecraft-alts_GM479516143.pdf
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/how-to-get-roblox-credit-for-free_GM431946152.pdf
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/rbl-gg-free-robux_GM431946152.pdf
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/earn-free-robux-online-android_GM431946152.pdf
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/roblox-robux-hack-download-2021_GM431946152.pdf
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/roblox-codes-to-get-free-clothes_GM431946152.pdf
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/earn-free-robux-on-roblox_GM431946152.pdf
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/roblox-hack-robux-app_GM431946152.pdf
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/free-robux-mobile_GM431946152.pdf
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-and-obc-2021_GM431946152.pdf
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/minecraft-hax-download-no-virus_GM479516143.pdf
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/minecraft-free-online-unblocked_GM479516143.pdf
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/free-robux-no-generator_GM431946152.pdf
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/speed-hack-new-way-jailbreak-roblox_GM431946152.pdf
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/how-to-get-stuff-that-cost-coins-free-mpe-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033fa.bin
e1449ae6dcc1e515143cefad729f56c820dce99bd6be3d068e5a32549da34a58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33FA 22720 bytes
font_01_sfnt_off000066d6.bin
776cb4e5338264d595c967a8fec9379201c9a4b17293b3c44edd5cf6cd499e31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66D6 18716 bytes

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