Malicious PDF — malware analysis report

Static analysis result for SHA-256 63693df10c025dcd…

MALICIOUS

PDF

46.0 KB Created: 2021-05-13 04:08:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3cb6bd8c836d00b35091aeee75fe26ed SHA-1: 6c4443666dbee014282c8fbd6e52644a5621f931 SHA-256: 63693df10c025dcd91794497b442b63f13609614b130533d85500a8801771d81
102 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are presented as game hacks and cheats, indicating a lure to download potentially malicious content. The heuristic PDF_SEO_LINK_FARM firing suggests a large number of these links were generated programmatically. The ML_NYX_PDF_MALICIOUS score further supports the malicious nature of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/roblox-hack-codes-game-hack
    • http://www.aqas.it/images/apps-to-hack-coin-master_GM406889139.pdf
    • http://www.aqas.it/images/roblox-hack-2021_GM431946152.pdf
    • http://www.aqas.it/images/how-to-get-20210-robux-for-free_GM431946152.pdf
    • http://www.aqas.it/images/how-do-u-hack-roblox_GM431946152.pdf
    • http://www.aqas.it/images/how-to-get-minecraft-for-free-on-pc_GM479516143.pdf
    • http://www.aqas.it/images/coin-master-cheat-codes-free_GM406889139.pdf
    • http://www.aqas.it/images/free-robux-website_GM431946152.pdf
    • http://www.aqas.it/images/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdf
    • http://www.aqas.it/images/where-can-i-get-free-coins-for-coin-master_GM406889139.pdf
    • http://www.aqas.it/images/minecraft-hack-client-18-9_GM479516143.pdf
    • http://www.aqas.it/images/coin-master-freebies-2021_GM406889139.pdf
    • http://www.aqas.it/images/coin-master-free-spins-no-human-verification_GM406889139.pdf
    • http://www.aqas.it/images/descargar-hack-coin-master_GM406889139.pdf
    • http://www.aqas.it/images/how-to-get-free-robux-youtube_GM431946152.pdf
    • http://www.aqas.it/images/hack-coin-master-android-2021_GM406889139.pdf
    • http://www.aqas.it/images/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdf
    • http://www.aqas.it/images/coin-master-free-spin-and-coins-links_GM406889139.pdf
    • http://www.aqas.it/images/static-moonactive-net-link_GM406889139.pdf
    • http://www.aqas.it/images/play-minecraft-pocket-edition-for-free_GM479516143.pdf
    • http://www.aqas.it/images/earn-free-robux-for-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ab2.bin
6d64bb28c62f3b1365569fa92995941e9342a73271ad25706ce86ee3bf6bb31a
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AB2 24944 bytes
font_01_sfnt_off0000842b.bin
40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
pdf-font-stream PDF embedded font (sfnt) at offset 0x842B 3884 bytes
font_02_sfnt_off000090d2.bin
248f759c619fe1c96c576728ba71c16d7d0933fc88833f740ae7987d47f6eb68
pdf-font-stream PDF embedded font (sfnt) at offset 0x90D2 18356 bytes