Malicious PDF — malware analysis report

Static analysis result for SHA-256 a18c7570dca04aa3…

MALICIOUS

PDF

35.2 KB Created: 2021-06-28 16:59:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 32c809800e0d96bbfb344ad442682c8e SHA-1: 1c06603d7e135df6fcb96d42ba1ed0cb3d83492e SHA-256: a18c7570dca04aa39bf4c4f9ffb0d9e3faf0b29cd254985128ac2554586fb3e6
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links disguised as guides for obtaining free in-game items, a common lure for phishing or malware distribution. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm suggests an attempt to drive traffic to potentially harmful sites. While no scripts were explicitly extracted, the document's structure and embedded URLs indicate a malicious intent to redirect users to external resources.

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/how-to-get-a-free-krambit-in-roblox-game-hack
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/coin-master-free-spin-app-iphone_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/free-robux-hack-2021_GM431946152.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/ways-to-get-free-robux_GM431946152.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/hack-coin-master-32-mod-apk_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/blogspot-coin-master-free-spins_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/60-free-spins-coin-master_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/coin-master-hack-without-human-verification-2021_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/robux-free-online_GM431946152.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/free-robux-microsoft_GM431946152.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/free-robux-no-verification-2021_GM431946152.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/roblox-imagine_GM431946152.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/coin-master-heaven-free-spins_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-codes-2021_GM431946152.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/free-robux-generator-no-verification_GM431946152.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/what-is-exploiting-in-roblox_GM431946152.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/hack-coin-master-ios-download_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/roblox-rape-hack_GM431946152.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/how-to-hack-the-plaza-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031d3.bin
8606d83ef8d3123bc16b454ee6407b2d3a76021cbc3cc0b7aaa7dd38f0107a37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31D3 22516 bytes
font_01_sfnt_off000063ff.bin
e484d10debcc957a4b6d5c98edf0a9ebc558e1c346a4e30dc7f33fcb1e3008f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63FF 19300 bytes

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