Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e50313cb76b9a5d…

MALICIOUS

PDF

34.0 KB Created: 2020-06-04 03:21:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00e44f52727912394958bacc71ade7f4 SHA-1: 50386a0c5ceedf99554b4251f8feb43b6d121d48 SHA-256: 9e50313cb76b9a5d4de61ab7cddf17206472ccc2baf7173d75af2b345dca06e5
92 Risk Score

Malware Insights

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

The PDF document contains a link that masquerades as a song download, aiming to trick the user into clicking it. The PDF also features a large number of external links, many of which point to similarly structured URLs, suggesting a link farm or a method for distributing further malicious content. The ML classifier strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://mail.woodfieldonwashington.com/uploads/1/3/0/5/130589322/130589322.html#download+godsmack+when+legends+rise+mp3
    • http://quietwatermarathon.com/uploads/1/3/1/3/131381167/15866953d77e.pdf
    • http://ultimatepowerwashing.net/uploads/1/3/0/4/130475990/verit.pdf
    • http://severnlife.com/uploads/1/3/0/6/130621997/gojusupejonudo_guzemevetimugi_zufetu_tinefeso.pdf
    • http://cpanel.hvammbolguesthouse.com/uploads/1/3/1/0/131070160/xuxasefiki.pdf
    • http://2fo.undesirable.us/uploads/1/3/1/0/131070364/109cd.pdf
    • http://recruitertoolbar.com/uploads/1/3/0/6/130622033/bugudojit.pdf
    • http://mail.woodfieldonwashington.com/uploads/1/3/0/5/130589322/terms.html
    • http://mail.woodfieldonwashington.com/uploads/1/3/0/5/130589322/dmca.html
    • http://mail.woodfieldonwashington.com/uploads/1/3/0/5/130589322/policy.html
    • https://dufedewunome.files.wordpress.com/2020/06/nekiloribigixut.pdf
    • https://zaguneje.files.wordpress.com/2020/06/mibejelemutapenazadig.pdf
    • https://zifenopi.files.wordpress.com/2020/06/lidepinimodaxiw.pdf
    • https://xuxosasi.files.wordpress.com/2020/06/jisomiresukodatupofurevat.pdf
    • https://verikakojof.files.wordpress.com/2020/06/40899668722.pdf
    • https://tosenofa.files.wordpress.com/2020/06/94753353992.pdf
    • https://wakatox.files.wordpress.com/2020/06/mivuzumidolisesanadol.pdf
    • https://dugejajaz.files.wordpress.com/2020/06/dikogobuberamibikeje.pdf
    • https://mavuwepezigi.files.wordpress.com/2020/06/rewakefepukovajovuseren.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_off00005630.bin
516f0fd928636f25dbf8c041a59a05e454c580fc182e1af581dcc03988dfd68b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5630 11900 bytes

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