Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d2d9ef2545a96be…

MALICIOUS

PDF

38.2 KB Created: 2020-04-07 10:56:36 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 992957d836e86cdac0e167271292ffd9 SHA-1: 57f3c198672a6e452f5abeec5d6fbf73dc8f3f53 SHA-256: 9d2d9ef2545a96bec68ded24f9358a02b71d4875b6b878b0ee884c2a920c3ef9
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains numerous external links, a technique often used to create SEO link farms or redirect users to malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically identified this behavior, indicating a high likelihood of malicious intent. The document body, though partially corrupted, contains a URL that points to a collection of other PDF files, reinforcing the link farm hypothesis.

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://bgbcabins.com/uploads/1/3/0/4/130436108/130436108.html#solucion+de+triangulos+con+razones+trigonometricas
    • http://apphub.biz/uploads/1/3/0/6/130639042/vivajewerok.pdf
    • http://bitofirish.com/uploads/1/3/0/8/130874424/nupanuguvigak.pdf
    • http://midses3.com/uploads/1/3/0/5/130590763/17563f0.pdf
    • http://denequia.com/uploads/1/3/0/5/130551014/julokikevude.pdf
    • http://issera.de/uploads/1/3/1/0/131070071/mobilaledizob-pokoketip.pdf
    • http://oldwillowcomplex.com/uploads/1/3/0/6/130604594/gititagovifile.pdf
    • http://paisleypropertysolutionsllc.com/uploads/1/3/0/9/130969332/6420307.pdf
    • http://delectrapanoramicaprodotti.com/uploads/1/3/0/6/130620769/vijorew-gukikovege-xugumolipor.pdf
    • http://chiromeetings.com/uploads/1/3/0/5/130551125/suvofisigovumir_sosewozibelo_lejesajuwigobo_velowabupi.pdf
    • http://amyerspainting.com/uploads/1/3/1/1/131163494/warutut-zogewafifuxi-wixibekuzabepi.pdf
    • http://theresmagicinthemoss.com/uploads/1/3/0/6/130620222/5b318f0.pdf
    • http://spicystyleblog.com/uploads/1/3/0/4/130476506/xukinebelazut.pdf
    • http://planariti.com/uploads/1/3/0/4/130476120/xazubape_zabugopiteno.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_off00006956.bin
4cc7c12e41d7ea3a22f8996bebb9313295124c58a3dfe299d96b1b5b1f78713a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6956 8708 bytes

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