Malicious PDF — malware analysis report

Static analysis result for SHA-256 d32f5797d4cafb8b…

MALICIOUS

PDF

47.5 KB Created: 2020-03-15 12:41:51 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ab31c9d4883801ed6f18c211f0919aeb SHA-1: 98d8c871ceea24c6885cf2aa6506806bba1654ef SHA-256: d32f5797d4cafb8b93a1476ff512d6b5999b7979a4dbaaead0ca82ba6fee2596
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or redirection strategy. The ML classifier also flagged this PDF as malicious with high confidence. The primary attack pattern involves directing users to these external resources, which likely host further malicious content or phishing pages.

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://bet365youhui.br3h.com/uploads/1/3/0/8/130873998/130873998.html#collformic+matagalls+les+agudes
    • http://seniorsafeathome.net/uploads/1/3/0/6/130621011/giwoxavuxeduxokag.pdf
    • http://morenala.org/uploads/1/3/0/5/130551059/rimukorone.pdf
    • http://myhelpdesk.store/uploads/1/3/0/4/130489499/bisogog.pdf
    • http://www.levensverhaal.net/uploads/1/3/0/6/130604632/5d4f3d.pdf
    • http://nicktrinidadgarcia.com/uploads/1/3/0/2/130271102/efda401ce75c.pdf
    • http://autodiscover.abco-ca.com/uploads/1/3/0/6/130603913/6346967.pdf
    • http://glmodelstudio.org/uploads/1/3/0/7/130775256/xiramed-bedaxojib.pdf
    • http://oakhillcontractorsllc.net/uploads/1/3/0/2/130288751/1401114.pdf
    • http://asbpw.com/uploads/1/3/0/3/130323493/6151547.pdf
    • http://emma-bellas.com/uploads/1/3/0/4/130483542/nilaj-votudupigi-dikebazegof.pdf
    • http://cschorun.com/uploads/1/3/0/6/130639803/1191401.pdf
    • http://www.memorialpeturn.com/uploads/1/3/0/5/130588433/9059800.pdf
    • http://zefyrdesign.co.uk/uploads/1/3/0/6/130621444/ec7f545a49b0.pdf
    • http://auntvaltreats.net/uploads/1/3/0/4/130483957/sezaju_vobunazu_latubewem.pdf
    • http://renobricks.com/uploads/1/3/0/5/130539449/1227573.pdf
    • http://bubbled.biz/uploads/1/3/0/5/130542852/e5ca4368d.pdf
    • http://dougsfloorcare.com/uploads/1/3/0/8/130813714/xumatefasowesuxejugo.pdf
    • http://scribejar.com/uploads/1/3/0/6/130639329/457ec9.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_off00008ea0.bin
100f8960fee93bd8bcbd079b8672c1ccd31fea21099051ceddb515e6cab0eba3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA0 9304 bytes

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