Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecec14f2e32242cf…

MALICIOUS

PDF

33.8 KB Created: 2021-06-28 03:32:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 949500e641ac17e4a9ebf8dde609541c SHA-1: e2ad73577c33722b65d8e0681826e442fd6b5224 SHA-256: ecec14f2e32242cf0e9b956672382bea51b34284a278e814a83d646038141ff4
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are hosted on `lib-stie.yai.ac.id` and `netcdn.co`, and promise free in-game currency for games like Roblox and Coin Master. This indicates a phishing or scam attempt, likely designed to lead users to malicious sites or download further malware. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a 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.co/app/431946152/robux-hack-sitesi-game-hack
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-tix-on-roblox-high-school_GM431946152.pdf
    • https://lib-stie.yai.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdf
    • https://lib-stie.yai.ac.id/repository/free-coins-and-free-spins-coin-master-2021_GM406889139.pdf
    • https://lib-stie.yai.ac.id/repository/free-account-that-has-robux_GM431946152.pdf
    • https://lib-stie.yai.ac.id/repository/roblox-hacking-weird_GM431946152.pdf
    • https://lib-stie.yai.ac.id/repository/coin-master-free-spins-only_GM406889139.pdf
    • https://lib-stie.yai.ac.id/repository/free-coin-master-gifts_GM406889139.pdf
    • https://lib-stie.yai.ac.id/repository/well-hack-robux_GM431946152.pdf
    • https://lib-stie.yai.ac.id/repository/coin-master-free-spins-link-june-2021_GM406889139.pdf
    • https://lib-stie.yai.ac.id/repository/speed-hack-code-for-roblox_GM431946152.pdf
    • https://lib-stie.yai.ac.id/repository/robuxy-com-free-robux_GM431946152.pdf
    • https://lib-stie.yai.ac.id/repository/roblox-free-robux-codes_GM431946152.pdf
    • https://lib-stie.yai.ac.id/repository/free-robux-that-actually-works-2021_GM431946152.pdf
    • https://lib-stie.yai.ac.id/repository/fly-me-roblox-hack_GM431946152.pdf
    • https://lib-stie.yai.ac.id/repository/hacks-to-get-free-robux_GM431946152.pdf
    • https://lib-stie.yai.ac.id/repository/free-robux-credit-card_GM431946152.pdf
    • https://lib-stie.yai.ac.id/repository/free-coins-and-spins-for-coin-master_GM406889139.pdf
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-robux-mircosoft-rewards_GM431946152.pdf
    • https://lib-stie.yai.ac.id/repository/coin-master-rewards-free-spins_GM406889139.pdf
    • https://lib-stie.yai.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e8d.bin
c4a0495f39140dc6ee921a464f7374e9cffe445733a03b944a7c10924fed4628		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E8D 21988 bytes
font_01_sfnt_off00005f08.bin
117ee72bb630da90720853492d1f320f51891f92be6a4805b8c5a13683e2976b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F08 18948 bytes

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