Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ce6e0bf17e0bdd2…

MALICIOUS

PDF

43.8 KB Created: 2020-04-01 20:12:06 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ad728395ef84f3d81303ebd4665f398a SHA-1: 187a47d8ce593c3f7861563a114ebe301cc14d81 SHA-256: 4ce6e0bf17e0bdd26497fd45034b508e61e3eadfc3a76d5c601ba2f075167eb2
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file exhibits characteristics of a link farm, containing a large number of external URLs pointing to other PDFs. The primary heuristic, PDF_SEO_LINK_FARM, indicates that the document is designed to generate a mass of external links, likely for SEO manipulation or to distribute malicious content. The embedded URLs and the ML classifier strongly suggest malicious intent.

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://loyeeleads.com/uploads/1/3/0/7/130738755/130738755.html#distribuciones+de+frecuencias+unidimensionales
    • http://wildrosekitchen.org/uploads/1/3/1/3/131383319/tomikorawifexazu.pdf
    • http://mwmosaic.com/uploads/1/3/0/5/130551198/18dad9d496b6457.pdf
    • http://heightsfloraldesigns.net/uploads/1/3/0/6/130605504/b381bce1fa960e.pdf
    • http://mimmills.com/uploads/1/3/0/2/130287883/3107381.pdf
    • http://yeseherrajes.com/uploads/1/3/0/3/130379067/6e903.pdf
    • http://walteralbertglobal.com/uploads/1/3/1/4/131453343/8742732.pdf
    • http://101summerst.com/uploads/1/3/0/7/130740320/jowajedoroduriz_jifabo.pdf
    • http://mychamberofsecretss.com/uploads/1/3/0/4/130488282/89ca179.pdf
    • http://msivannawoods.com/uploads/1/3/0/5/130543276/sutesidobifelif.pdf
    • http://heightscornermkt.com/uploads/1/3/0/7/130739893/468ee.pdf
    • http://djpropertymaintenance.com/uploads/1/3/0/6/130639764/notepu.pdf
    • http://bettermepublishing.com/uploads/1/3/1/3/131398416/4650151.pdf
    • http://naminovawalk.org/uploads/1/3/0/5/130588936/zupomigazego-suzukiset.pdf
    • http://southsidedavis.com/uploads/1/3/0/8/130814562/soxumofupewop.pdf
    • http://myrthadubois.com/uploads/1/3/1/4/131406211/1074525.pdf
    • http://marcellusrocks.info/uploads/1/3/0/7/130740092/9232335.pdf
    • http://alliance.life/uploads/1/3/0/8/130815437/8af58.pdf
    • http://beeidentification.com/uploads/1/3/1/0/131070294/5971224.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_off00007e6c.bin
816aacf0a0d85dd1fc21c02f20842fbf9042bd319d3eb74770fe627c5a1d0195		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E6C 9332 bytes

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