Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8581bbf79d603f3…

MALICIOUS

PDF

37.3 KB Created: 2020-03-15 10:40:18 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a5efd3cae9dcea7f9c4a90425f3d651c SHA-1: e039b07792102b4b5236be8ec66fbd16b7e4dd20 SHA-256: d8581bbf79d603f3da00620fb1ecb8a3c604e6950d61d601e91033a7e089a778
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious. The document body contains garbled text and a URL that appears to be related to SEO spam or a content lure. The primary attack pattern involves redirecting users to a vast network of websites, likely to distribute further malware or engage in phishing.

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://lebojin.br3h.com/uploads/1/3/0/2/130271043/130271043.html#badlapur+songs+free++320kbps
    • http://wolfgangbaur.com/uploads/1/3/0/5/130589191/nusemosononi.pdf
    • http://www.capepostalstory.com/uploads/1/3/0/6/130639406/fonigit.pdf
    • http://windswarm.com/uploads/1/3/0/5/130543106/9396283.pdf
    • http://allinusprotaxservice.com/uploads/1/3/0/7/130776016/vikixusegokiv.pdf
    • http://www.beijingshinryukan.com/uploads/1/3/0/6/130639030/4475714.pdf
    • http://peekamoo.co.uk/uploads/1/3/0/7/130740465/e6db9fa5365624b.pdf
    • http://baudlbears.com/uploads/1/3/0/7/130738564/b82248b.pdf
    • http://www.glynncountygranite.com/uploads/1/3/0/6/130640044/f345edce3d.pdf
    • http://addiscakes.com/uploads/1/3/0/5/130590582/gukolesa.pdf
    • http://www.electrictwig.com/uploads/1/3/0/6/130604635/nojawusomotematefige.pdf
    • http://blog.cat-fish.net/uploads/1/3/0/5/130539759/vovujefenagege.pdf
    • http://teamdigia.com/uploads/1/3/0/7/130740026/bipibalapiz-zarodesedes-dadururomegane.pdf
    • http://genasurphlis.com/uploads/1/3/0/6/130621325/zatamibat.pdf
    • http://ileanaslavin.com/uploads/1/3/0/6/130605072/249fdbfede.pdf
    • http://mx.beejoyful.com/uploads/1/3/0/2/130274345/4632528.pdf
    • http://womencentered4success.org/uploads/1/3/0/8/130814680/jomopujowaron.pdf
    • http://myangelabartlett.com/uploads/1/3/0/8/130813539/tekipademuto_bebujitoti_voxugum.pdf
    • http://stmmlwr.org/uploads/1/3/0/7/130776823/sazobekifa.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_off0000699f.bin
3281e47f14c7697b07438a0fd213d958b2f1b68ca30275ac830395471c08e429		 pdf-font-stream PDF embedded font (sfnt) at offset 0x699F 7756 bytes

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