Malicious PDF — malware analysis report

Static analysis result for SHA-256 44e3efdd02655f09…

MALICIOUS

PDF

36.3 KB Created: 2020-03-27 11:45:38 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: bc09ee82b7157dc0f4a2a6cae8219142 SHA-1: b4adbcb67e5f1353f074c41cd1b2a2c0a37a12a1 SHA-256: 44e3efdd02655f096af7c1c61b505b5e8da1f52a55665eb5e267cbdc71aaa5be
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ML classifier also flagged this PDF as malicious with high confidence. The document body contains text that appears to be a lure, possibly related to song lyrics, which is unusual for a legitimate document and likely serves to obscure the malicious intent. The primary goal appears to be directing users to a network of linked sites.

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://blackhonda.net/uploads/1/3/0/5/130541837/130541837.html#jingle+bells+rock+lyrics+original
    • http://thesinglegirlsitinerary.com/uploads/1/3/0/8/130813798/guworanotadi.pdf
    • http://tempodocs.com/uploads/1/3/0/9/130969708/433626043924.pdf
    • http://ns1.kristylewis.fish/uploads/1/3/0/5/130588701/temutenisu.pdf
    • http://uvirtualcare.com/uploads/1/3/0/6/130604332/xevasa_giseju_xolazorulew_wupemejaz.pdf
    • http://xgens.org/uploads/1/3/0/2/130287890/5638642e0d78a2.pdf
    • http://universvoyages.org/uploads/1/3/0/5/130588843/ff75486ff19.pdf
    • http://thirdactx.com/uploads/1/3/0/6/130605084/lanafezoli.pdf
    • http://mordengr8wash.com/uploads/1/3/0/5/130539714/gujawixet_welizizuwiwu_nufawix_baxukupafawa.pdf
    • http://movimentomarianobetania.org/uploads/1/3/0/4/130488699/628142.pdf
    • http://leadsolo.com/uploads/1/3/0/4/130490117/wijebotufuvir_bidejugokesito_julepalafenunu.pdf
    • http://www.blobfishbooks.com/uploads/1/3/0/7/130739214/newawu.pdf
    • http://courtneyandneal.com/uploads/1/3/0/7/130738603/4146279.pdf
    • http://7thdaughterdesignsus.com/uploads/1/3/0/2/130287296/migewij_lofelofaw_bikeza_bejefulolikima.pdf
    • http://madebymav.shop/uploads/1/3/0/8/130814460/97b625649d1.pdf
    • http://bornthisday.net/uploads/1/3/0/6/130603975/8687502.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_off000063c9.bin
87486b9dbead2b0ef78b197025394c77652120a3465a3b7349afc813f6208c97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63C9 8308 bytes

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