Malicious PDF — malware analysis report

Static analysis result for SHA-256 71c54bfd99d7c90d…

MALICIOUS

PDF

43.0 KB Created: 2021-05-13 16:20:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 37e977b9dde9b3a4acef282675192714 SHA-1: aa272ab1267c50b1095bc3492be10e8b4c28f8e0 SHA-256: 71c54bfd99d7c90df1565c673f18bfd9d411ab603a5ed5c53050bd4207fb335f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a heuristic firing for a 'PDF_SEO_LINK_FARM', indicating a large number of external links designed to appear as legitimate content. The document body, though partially corrupted, contains references to 'Minecraft Free' and a URL that suggests a download lure. The presence of these links and the overall structure strongly suggest an attempt to redirect users to malicious sites for downloading unwanted software or engaging in scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/479516143/minecraft-free-game-hack
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/how-long-is-the-minecraft-free-trial_GM479516143.pdf
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/free-coin-master-spins-no-verification_GM406889139.pdf
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/how-can-i-get-free-robux_GM431946152.pdf
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/get-free-spins-coin-master-link_GM406889139.pdf
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/robux-match_GM431946152.pdf
    • http://elearning.min13bm.sch.id/__statics/gudangsoal/files/free-robux-just-click_GM431946152.pdf
    • http://elearning.min13bm.sch.id/__statics/gudangsoal/files/coin-master-hack-without-root_GM406889139.pdf
    • http://elearning.min13bm.sch.id/__statics/gudangsoal/files/minecraft-bedrock-edition-download-pc-free_GM479516143.pdf
    • http://elearning.min13bm.sch.id/__statics/gudangsoal/files/how-to-get-free-food-on-coin-master_GM406889139.pdf
    • http://elearning.min13bm.sch.id/__statics/gudangsoal/files/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdf
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/coin-master-level-3_GM406889139.pdf
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/jailbreak-script_GM431946152.pdf
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/robux-generator-com_GM431946152.pdf
    • http://elearning.min13bm.sch.id/__statics/gudangsoal/files/free-minecraft-printables-food-labels_GM479516143.pdf
    • http://elearning.min13bm.sch.id/__statics/gudangsoal/files/roblox-royale-high-diamond-hack_GM431946152.pdf
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/roblox-free-clothes-hack_GM431946152.pdf
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-for-free_GM431946152.pdf
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/get-free-spins-link-in-coin-master_GM406889139.pdf
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/how-do-i-get-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ce4.bin
40c46ce1c069dfd1eaa358ea2c35e05885f670010a701480991c4b3094140916		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CE4 25820 bytes
font_01_sfnt_off0000883d.bin
2778e064ee8e4e3a4bd3984a17bb7eaaeefaa41a67eb131b8ade69fe1653bbfc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x883D 17568 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.