Malicious PDF — malware analysis report

Static analysis result for SHA-256 0391bdc76e167ec0…

MALICIOUS

PDF

39.3 KB Created: 2020-03-15 02:55:24 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 79aca2c4c8f5342d3553d2263c323ac0 SHA-1: 8115aa7df42c207413203499b7dbecf9624db335 SHA-256: 0391bdc76e167ec04b45256728e017d92f40c671070941f98b7dda34036343fc
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The primary URL http://h387d.slpny.com/uploads/1/3/0/4/130483963/130483963.html#michelin+guide+japanese+london and many others point to PDF files hosted on various domains. This suggests a link farm or a method to distribute potentially malicious content through numerous redirecting URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://h387d.slpny.com/uploads/1/3/0/4/130483963/130483963.html#michelin+guide+japanese+london
    • http://www.presentedbyck.co.uk/uploads/1/3/0/2/130289177/wepokiwamikafefem.pdf
    • http://rabbitmountainlavender.com/uploads/1/3/0/2/130271142/8fed3f36da49.pdf
    • http://www.linecarmichael.dk/uploads/1/3/0/2/130287939/f80a7c8ba21d.pdf
    • http://kaydumedia.com/uploads/1/3/0/2/130271205/6622174.pdf
    • http://katemcdannold.com/uploads/1/3/0/3/130312974/f75116a2f47.pdf
    • http://gebaudereinigung.net/uploads/1/3/0/6/130604486/baxabugewoz.pdf
    • http://usbsfund.com/uploads/1/3/0/3/130323601/fonoredefel_jalekurevariwib_xakemutepo_wufejorajofixo.pdf
    • http://mermaidtidying.com/uploads/1/3/0/5/130543148/4049847.pdf
    • http://yinyangyoga.xyz/uploads/1/3/0/8/130873927/7664a43e38.pdf
    • http://dthmd.com/uploads/1/3/0/6/130621506/kofijapa-fonusute.pdf
    • http://www.dynamicsymmetryart.com/uploads/1/3/0/4/130476215/vubuzupuxe.pdf
    • http://www.alissacastaneda.org/uploads/1/3/0/6/130603807/1406921.pdf
    • http://themeatballguy.com/uploads/1/3/0/2/130288661/1076748.pdf
    • http://rto2go.com.au/uploads/1/3/0/7/130776489/5397076.pdf
    • http://in2itconsultants.com/uploads/1/3/0/2/130287503/nikew.pdf
    • http://nycmedicalmarijuana.com/uploads/1/3/0/2/130270761/fezolajuj-zedetitifum-nopupibudunup.pdf
    • http://www.2018conference.nchn.org/uploads/1/3/0/9/130969048/wexunodoku.pdf
    • http://scarletexposurephotography.com/uploads/1/3/0/4/130483394/1403874.pdf
    • http://annapontel.com/uploads/1/3/0/6/130639865/4562777.pdf
    • http://mta-sts.mail.jropro.com/uploads/1/3/0/2/130288447/f5bfd78.pdf
    • http://przyczepy.com/uploads/1/3/0/5/130542872/1935cba5.pdf
    • http://saynotoservices.co.uk/uploads/1/3/0/2/130273610/fisupo.pdf
    • http://jimstahlart.net/uploads/1/3/0/8/130813663/sezefikesine.pdf
    • http://casadejesuspr-org.todorental.com/uploads/1/3/0/8/130814178/1700253.pdf
    • http://centerformissinginformation.com/uploads/1/3/0/9/130969744/mimafudubolub.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_off00007063.bin
438bc18215801e5b730aeb64612d58c7b36cbe6779b94410c81725be96a8179e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7063 7464 bytes

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