Malicious PDF — malware analysis report

Static analysis result for SHA-256 40506c5739fb52b9…

MALICIOUS

PDF

38.4 KB Created: 2020-04-11 13:31:39 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c174dab42c9a1183e424e1b9a0834716 SHA-1: f27d80819973a464dc7bb89e89748f4db28843e4 SHA-256: 40506c5739fb52b91bedc4d7e4b9bfd6d80c0dead49d2d3458d5dcb3e43f1bf4
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDFs hosted on similar domains. This pattern is indicative of a link farm designed to distribute malicious content or engage in SEO poisoning. The primary URL, http://globecompay.net/uploads/1/3/0/5/130590567/130590567.html#a%C5%9Fk+ve+gurur+e+kitap+indir+pdf, is likely the initial lure. The ML classifier strongly supports the malicious nature of this PDF.

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://globecompay.net/uploads/1/3/0/5/130590567/130590567.html#a%C5%9Fk+ve+gurur+e+kitap+indir+pdf
    • http://havenadu.com/uploads/1/3/0/8/130874382/90be7c623b4ca.pdf
    • http://iampreformance.com/uploads/1/3/0/5/130551488/61bb1b5.pdf
    • http://tribecamobile.com/uploads/1/3/1/0/131070147/ec9f56825e75.pdf
    • http://jeanettefildermandesigns.com/uploads/1/3/0/2/130287441/vizedoxa_totepa_fizutekop.pdf
    • http://x-der.com/uploads/1/3/0/7/130740149/2c73e3e2aff73.pdf
    • http://alchemiventures.com/uploads/1/3/0/9/130969422/ziwedodunovese-segijubuxagu-ganedituxu.pdf
    • http://sawmllc.com/uploads/1/3/0/4/130483373/womobodesinog-tetepuvo-sojebamixawi-lituworeke.pdf
    • http://8ballatc.com/uploads/1/3/0/4/130477414/eb7404f.pdf
    • http://andthestarsaligned.com/uploads/1/3/0/5/130539101/bexunisodaf-daritud-guwaxevemuvevep-majanuwu.pdf
    • http://wanigatungapictures.com/uploads/1/3/0/2/130289719/zaneriwu.pdf
    • http://centralstockcare.com/uploads/1/3/1/4/131438510/vedozuruwokume-manane.pdf
    • http://carrieguth.com/uploads/1/3/1/3/131398583/6198751.pdf
    • http://globalmacroadvisors.com/uploads/1/3/0/9/130968915/2714879.pdf
    • http://nakedcityexpress.com/uploads/1/3/0/9/130969097/4432444.pdf
    • http://8ballatc.com/uploads/1/3/0/4
    • 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_off000069e7.bin
4ae173bb20226d74774c1585d403f10e5339710d7102ce612737d3d2f10ad161		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69E7 9752 bytes

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