Malicious PDF — malware analysis report

Static analysis result for SHA-256 c083b33df8b5123f…

MALICIOUS

PDF

36.8 KB Created: 2020-04-01 20:52:36 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ab5d7462884e56e0e03fad7f62d71c5e SHA-1: 7ce665d57ab43902640ffb30b1a62ad2da58a58c SHA-256: c083b33df8b5123f1270cd364fad7a95fa2d4466318ec87233116d7973cbe74a
92 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The document body text, though partially corrupted, includes references to academic materials and the wkhtmltopdf tool, suggesting a lure for users seeking specific content. The primary attack pattern appears to be a link farm designed to drive traffic or distribute further malicious content via the numerous embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://brandstormpromotions.net/uploads/1/3/1/3/131379026/131379026.html#intimate+relationships+miller+8th+edition+test+bank
    • http://drporterspersonalpowerprogram.com/uploads/1/3/0/5/130588802/5f54fd6acce83f3.pdf
    • http://charbrinson.com/uploads/1/3/0/4/130489367/852133.pdf
    • http://hapticfashion.com/uploads/1/3/0/5/130590739/f274c120.pdf
    • http://petvisiontech.com/uploads/1/3/0/5/130542729/levakuju.pdf
    • http://evanedu.com/uploads/1/3/0/6/130620649/gilape_jopefadelezume_fazebesusi.pdf
    • http://cynosuregt.com/uploads/1/3/1/4/131453145/fabipiv_wujazu_situnuxof.pdf
    • http://meroveo-upower.store/uploads/1/3/0/7/130739347/ea2ecba1.pdf
    • http://solarscrubcq.com/uploads/1/3/0/7/130739267/gezara.pdf
    • http://1210photography.com/uploads/1/3/0/5/130539111/7736066.pdf
    • http://legendarylair.com/uploads/1/3/0/4/130483520/zujupenejimidunepimu.pdf
    • http://latin-academycharter.org/uploads/1/3/0/4/130477829/wikaluzezado_jibulebuk.pdf
    • http://ntechcoatings.com/uploads/1/3/1/4/131453448/wogix.pdf
    • http://flourishmovement.net/uploads/1/3/0/9/130969680/ferotu-tibazan-bixejirekifanav-nexabuledome.pdf
    • http://createoctober.com/uploads/1/3/0/7/130776273/veruvu_fiwagasolel_kikomoseda_kamewug.pdf
    • http://filmsofnorthcarolina.com/uploads/1/3/0/6/130604615/a70fb1ee25.pdf
    • http://rosarysauce.com/uploads/1/3/0/5/130550817/fakarugebapofarizot.pdf
    • http://casvets.org/uploads/1/3/0/4/130475925/fonejorit-gaxedanuvukafu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065f9.bin
de6926603886d7c06ec8af2d43b225f7230b7774663328d0d5fed8f6be37a4f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65F9 8228 bytes

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