Malicious PDF — malware analysis report

Static analysis result for SHA-256 59788df1aa0fe1fd…

MALICIOUS

PDF

49.6 KB Created: 2020-03-27 02:11:30 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ab1d0fd104de2b46f9cd8ee0a5d1041a SHA-1: 5ab19a6141d7fe1a3dfc9c876134945113e43397 SHA-256: 59788df1aa0fe1fd897bb88904a591bd0bd9a311cc2062c2a61e8055ac6a61b4
92 Risk Score

Malware Insights

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

The PDF document contains a significant number of external links, a technique often used for SEO poisoning or to redirect users to malicious content. The ML classifier strongly indicated maliciousness. The document body, though partially corrupted, contains a URL that aligns with the detected link farm behavior.

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://taxsavvywealth.net/uploads/1/3/1/4/131408741/131408741.html#nombres+de+grupos+cristianos+y+su+significado
    • http://clin-foci.com/uploads/1/3/0/5/130539054/tenexekopuvas.pdf
    • http://janiceandersonmusic.com/uploads/1/3/0/5/130543543/11c61532f220b7.pdf
    • http://ns2.tandem-co.com/uploads/1/3/0/3/130323335/papilefewosu_kipasaxexedogo.pdf
    • http://porvoo2020.com/uploads/1/3/0/7/130775182/fujisopaza.pdf
    • http://room212productions.com/uploads/1/3/0/2/130289577/a7e59b74a.pdf
    • http://lifeadored.com/uploads/1/3/0/7/130739756/2932083.pdf
    • http://redcosplay.com/uploads/1/3/0/8/130815137/bafelababetos.pdf
    • http://www.mysmellysocks.com/uploads/1/3/0/7/130740072/b6e183.pdf
    • http://office-supp.com/uploads/1/3/0/8/130813784/d5cf06fc55df32d.pdf
    • http://troybartlett.com/uploads/1/3/0/5/130543985/farisanawivabotufaso.pdf
    • http://skylosinvestments.com/uploads/1/3/1/1/131163976/jusidar-didiputavuwor-xogaki-kogeweridiwu.pdf
    • http://positively-jewish.org/uploads/1/3/0/5/130543198/vakosigo_zafidu.pdf
    • http://www.pfeiferhomeinspections.com/uploads/1/3/0/3/130379158/titakir-lagosorusowovir-zesesuwatenenu-fufakupuzo.pdf
    • http://notably.com.au/uploads/1/3/0/6/130620509/perofexupaxodiku.pdf
    • http://ramnathsiddicommunitycentre.com/uploads/1/3/0/4/130436122/4064331.pdf
    • http://gynngerswagdeals.com/uploads/1/3/0/7/130739816/zipofemumerisimeraf.pdf
    • http://caddelite.ca/uploads/1/3/0/2/130270953/1446a0b57d38.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007f93.bin
747d54ef721bec10ee0bcbad368481c56d8a5b8bfef93f41371636a465c9bdd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F93 9368 bytes
font_01_sfnt_off0000a118.bin
80c33299320c81568f6bce5f575004607b6a6c0b36da5aa72c9d36ac4e86e521		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA118 16304 bytes

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