Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa9a1faa6a7a8e96…

MALICIOUS

PDF

51.2 KB Created: 2020-05-28 14:06:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0ab1c3f5db28c0ecf7bc00172c93f8d9 SHA-1: febbecf46ee3ee96ff23afaf4e67c1d84d6b81db SHA-256: fa9a1faa6a7a8e96c66a3afb98466c96526b07f8d4a9eebc38baf362cd0c91f7
70 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 PDF files hosted on various domains. This suggests a link farm or redirection scheme designed to obscure the ultimate destination. One of the embedded URLs, http://jehrv.slpny.com/uploads/1/3/0/2/130270873/130270873.html#the+art+and+practice+of+the+learning+organization+pdf, is presented as a lure for downloading a document. The presence of a 'download button' heuristic further supports this. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jehrv.slpny.com/uploads/1/3/0/2/130270873/130270873.html#the+art+and+practice+of+the+learning+organization+pdf
    • http://charlottetrolley.org/uploads/1/3/1/6/131606002/nexifus.pdf
    • http://rjlcollection.com/uploads/1/3/1/8/131857598/1542310.pdf
    • http://foodtogove.com/uploads/1/3/0/6/130622083/febejoxebipu_ragom.pdf
    • http://pszichokardiologia.hu/uploads/1/3/0/6/130605390/954236.pdf
    • http://corporatv.com.br/uploads/1/3/1/1/131164446/9060540.pdf
    • http://deguiraandson.com/uploads/1/3/0/6/130639180/xofokiwakuf.pdf
    • http://cascadecustomconcrete.com/uploads/1/3/1/8/131871912/xerifivegefafiwus.pdf
    • http://eblastsandblasting.com/uploads/1/3/1/6/131606314/9eca067e.pdf
    • http://18a.undesirable.us/uploads/1/3/1/1/131163832/vutup.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_off00009ae0.bin
9df3f847de61270950af3f6d2ff095ad4cd5e82ae1e439c2f88f55098316162a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AE0 11620 bytes

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