Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a7e56ee80ecf292…

MALICIOUS

PDF

43.3 KB Created: 2021-05-14 03:31:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 6c41f0b2bc29c1bbd891232ba05d722e SHA-1: d546312450baa1c94467fe1d3d5d5a0062e0b93d SHA-256: 6a7e56ee80ecf292742f88d6c6797375e70fe69c58e37d3ffe2e773cffabafea
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs that form a link farm, directing users to sites promising in-game currency or cheats. The ML classifier and PDF link farm heuristics strongly indicate malicious intent, likely to drive traffic to phishing or potentially malicious download sites. No scripts were extracted, but the structure suggests a lure for initial access, possibly via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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 https://netcdn.xyz/app/431946152/free-robux-games-on-roblox-game-hack
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/how-to-make-robux-on-roblox_GM431946152.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/robuxmatch-com-free-robux_GM431946152.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/free-pet-snacks-coin-master_GM406889139.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/free-coin-master-spins-link-download_GM406889139.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/free-robux-generator-2021_GM431946152.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/free-apk-mods-coin-master_GM406889139.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/coin-master-free-spins-link-today_GM406889139.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/how-to-use-wurst_GM479516143.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/download-minecraft-free-hiapphere_GM479516143.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/roblox-hack-com_GM431946152.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/coin-master-free-raid-link_GM406889139.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/free-robux-that-actually-works_GM431946152.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/coin-master-spin-hack-2021_GM406889139.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/minecraft-education-free_GM479516143.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/free-robux-generator-2021-no-survey_GM431946152.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/how-do-u-get-free-robux_GM431946152.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/free-rare-cards-for-coin-master_GM406889139.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/free-spins-promo-code-for-coin-master_GM406889139.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/coin-master-free-spins-and-coins-group_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b09.bin
17b0db56a235cc1256b3d1f2fafbc2cc1190bd7a3a9b3f4bd3171d897e30a676		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B09 26308 bytes
font_01_sfnt_off00008602.bin
121d272924a8948b6bfdf19867642727f57edf659587de43eb46571e5003926c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8602 18576 bytes

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