Malicious PDF — malware analysis report

Static analysis result for SHA-256 4382824ce6b67e8b…

MALICIOUS

PDF

61.5 KB Created: 2020-03-10 05:45:04 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 0268a6e123e9afde357b59c1c2f1e739 SHA-1: 57a7b4bf5ad2855a3013710a17a5afe76dc769b6 SHA-256: 4382824ce6b67e8b3a016d8d352f546ce0197c6131ae88bed146f0e70e6219fe
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, identified as a link farm, pointing to various PDF files on different domains. This technique is often used for SEO manipulation or to distribute malicious payloads. The ML classifier strongly indicated maliciousness, and the PDF structure itself is suspicious due to the mass of outbound links.

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://emrbookings.com/uploads/1/3/0/7/130740158/130740158.html#lipan+apache+tribe+texas
    • http://bodymindandsport.club/uploads/1/3/0/5/130588701/rezaxa-xerijebanuv-mufokuxew-nowowupiwivipim.pdf
    • http://www.ffpdonline.org/uploads/1/3/0/4/130475955/2505166.pdf
    • http://howselp.com/uploads/1/3/0/8/130874510/8e8e34.pdf
    • http://www.yorktownplumbing.com/uploads/1/3/0/5/130544110/9653756.pdf
    • http://beautyinyouhairsupply.com/uploads/1/3/0/6/130622114/dekitolanoge.pdf
    • http://patienthealthinfo.com/uploads/1/3/0/6/130621465/cc67ad7a94d7e19.pdf
    • http://elisanliving.com/uploads/1/3/0/3/130379132/4865225.pdf
    • http://newprogressivembc.com/uploads/1/3/0/4/130489627/wusokisaxir.pdf
    • http://www.washleylewis.com/uploads/1/3/0/2/130289218/6143777.pdf
    • http://deceptionsucks.com/uploads/1/3/0/2/130287299/1940106.pdf
    • http://www.bsellsco.com/uploads/1/3/0/4/130488073/sudepe.pdf
    • http://www.popbox.shop/uploads/1/3/0/7/130739074/jesiretekumuko.pdf
    • http://ulucommerce.com/uploads/1/3/0/2/130273944/kasusomevazak.pdf
    • http://ens-art.com/uploads/1/3/0/6/130604039/kewolafojawobatimaki.pdf
    • http://www.prjumps.com/uploads/1/3/0/2/130270763/sudad.pdf
    • http://chantillyescaperoom.com/uploads/1/3/0/7/130776688/d34611.pdf
    • http://cloudaccountantaccelerator.com/uploads/1/3/0/3/130313271/zetefijafogowo.pdf
    • http://bluesheeppainting.com/uploads/1/3/0/5/130546118/4518540.pdf
    • http://bloomingentrepreneur.com/uploads/1/3/0/6/130621601/xawok.pdf
    • http://ryanbeil.com/uploads/1/3/0/6/130639802/geforafotubo.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_off0000c50a.bin
093b26f475ec85afe0570d8b84c6c59067d4edd1526cf4171db75dd6ad939b99		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC50A 9672 bytes

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