Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f8329359fcc6328…

MALICIOUS

PDF

44.9 KB Created: 2020-03-22 07:15:40 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 501564a3fb3b87886ecc61237478eb49 SHA-1: 2d44c192d3b9cba9eb7f7566f98cfce60f6c5912 SHA-256: 7f8329359fcc6328c07ab83c7a3078543ad448d40e8546b7341a8f1916bf2fd4
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, identified as a PDF SEO link farm. The primary lure appears to be a 'love languages quiz for work', directing users to a series of PDF files hosted on various domains. The embedded URL and the numerous external links suggest a campaign to drive traffic or distribute further malicious content. No scripts were extracted, limiting the analysis of direct payload execution.

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://stevenamiller.com/uploads/1/3/0/7/130775820/130775820.html#love+languages+quiz+for+work
    • http://morghieflaterud.com/uploads/1/3/0/3/130379561/sesudobuta_nosap_gekebedakuwera.pdf
    • http://imminor.no/uploads/1/3/0/2/130289623/gokokekabusif_fogoxumelubaxi_zixawetedit.pdf
    • http://undiscoveredactress.com/uploads/1/3/0/7/130739067/nodan-bedog-matitunakijaf-sozen.pdf
    • http://pickapearl.co.uk/uploads/1/3/0/3/130313215/7737946.pdf
    • http://csparling.com/uploads/1/3/0/5/130589187/janip.pdf
    • http://regencyboutique.com/uploads/1/3/0/5/130590096/donewinijafena.pdf
    • http://people.kreativedimension.com/uploads/1/3/0/3/130324241/pozoziwo-kitajiwi-tanovegu.pdf
    • http://oatbardicschool.org/uploads/1/3/0/6/130604165/gepurixeji_xojuvop_xenerej_merovefiro.pdf
    • http://www.perfectly-charmed.com/uploads/1/3/0/8/130815115/solivogitubedojon.pdf
    • http://nancywijnants.com/uploads/1/3/0/4/130483806/9804074.pdf
    • http://bta4biz.com/uploads/1/3/0/4/130489228/kogijiwufawigepel.pdf
    • http://www.hummingbirdconcerts.org/uploads/1/3/0/2/130271184/kelekadesenotul_robavuji.pdf
    • http://fairfieldaero.com/uploads/1/3/1/1/131164481/8975450.pdf
    • http://urgentcare4women.com/uploads/1/3/0/6/130604606/065bc50edeb26.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_off00006f23.bin
bb5def2101f916bbded5a6496ee5efe9eb397dadb2def20f5f992a1878dfb3b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F23 8380 bytes
font_01_sfnt_off00008f6f.bin
0437ae0a8c3b0d4d0bca19117c23f937da5e886acb635ecc2018453b05816554		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F6F 16168 bytes

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