Malicious PDF — malware analysis report

Static analysis result for SHA-256 9320cbc6e34f7a7b…

MALICIOUS

PDF

36.2 KB Created: 2021-06-28 14:08:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7924e71fd78d33456f1832464fc54dce SHA-1: d3334145fc380f3ff91e9c3825af3511acf7f41f SHA-256: 9320cbc6e34f7a7b896f9f986dcce8f26b44fa8f444bb139a3a118ffc594ac8e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external resources, many of which are related to game cheats and in-game currency, suggesting a lure for users to download potentially malicious files. The heuristic findings indicate a high likelihood of malicious intent, with the ML classifier strongly flagging the document. The presence of a download button lure further supports this assessment.

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.co/app/431946152/roblox-fast-speed-hack-script-game-hack
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/get-free-robux-2021_GM431946152.pdf
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/comment-faire-marcher-synapse-hack-roblox_GM431946152.pdf
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/free-robux-codes_GM431946152.pdf
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/coin-master-free-cards-and-spin-link_GM406889139.pdf
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/lazy-blocks-com-free-robux_GM431946152.pdf
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-for-coin-master_GM406889139.pdf
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/coin-master-free-cards-link_GM406889139.pdf
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-for-robux_GM431946152.pdf
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/free-robux-2021_GM431946152.pdf
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/but-link-says-free-robux_GM431946152.pdf
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/pokemon-go-free-or-james_GM1094591345.pdf
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/free-robux-offers_GM431946152.pdf
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/free-robux-legit_GM431946152.pdf
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/how-to-use-money-hack-in-roblox-any-game_GM431946152.pdf
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-without-human-verification_GM406889139.pdf
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/free-robux-no-gift-card_GM431946152.pdf
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/free-roblox-hacks-co_GM431946152.pdf
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/get-free-gold-cards-in-coin-master_GM406889139.pdf
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/how-to-use-cheat-engin-67-in-roblox_GM431946152.pdf
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/roblox-bloxburg-free-gamepass_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000035eb.bin
90d00e8cf3b3957a59f7761e3638cd0bcb67c5739069f45e42c26651b0715390		 pdf-font-stream PDF embedded font (sfnt) at offset 0x35EB 22336 bytes
font_01_sfnt_off0000679d.bin
14965fe15a5ef29f1772a838ff33152b6725912a848b839154cb36a334cb8613		 pdf-font-stream PDF embedded font (sfnt) at offset 0x679D 19392 bytes

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