Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ccf2d9a668c30a3…

MALICIOUS

PDF

42.0 KB Created: 2021-05-15 08:02:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7dd12abd20efd186771012332a729ebb SHA-1: 2c719b4998e4889713335d7fb7bd1193a584cad4 SHA-256: 0ccf2d9a668c30a3cf6920f8ca413b1b95b2881604937fadfa5ed1ab2b0da419
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which are structured as SEO-friendly slugs pointing to other PDF documents. The document body also contains a direct link to a URL that appears to be related to game hacks. This suggests a link farm or SEO manipulation tactic, likely intended to drive traffic or distribute further malicious content. No scripts were extracted, but the presence of numerous external links indicates a malicious intent to redirect the user.

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/406889139/free-coins-and-spins-coin-master-game-hack
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/free-robux-instantly_GM431946152.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/how-to-get-more-robux-for-free_GM431946152.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/coin-master-free-spins-for-iphone_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/free-coin-master-spins-2021_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/best-way-to-get-free-robux_GM431946152.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/websites-to-get-free-robux_GM431946152.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/coin-blogspot_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/minecraft-xbox-free_GM479516143.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/coin-master-date-and-time-hack_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/coin-master-hack-ios-12_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/httpswwwurcouponsdealcom202103coinmasterfreespinandcoinlinkshtml_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/how-to-earn-free-spins-coin-master_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/free-100-robux_GM431946152.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/free-coin-master-coins-and-spins_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/coin-master-fun-hack-online_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b36.bin
3cbd839d4c96555c0633c6d1d0b11e1ae37da0a44559078a9132f1904cb15f6c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B36 24580 bytes
font_01_sfnt_off00008258.bin
f1068137021f01f6b5cc3550273fdf5362b49e27ffe305b66dd7920a08d48120		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8258 18060 bytes

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