Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca279ecf7ff8501a…

MALICIOUS

PDF

48.4 KB Created: 2020-06-14 15:03:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3de72096d4a849ee5b2e4999065e28e0 SHA-1: 0afdeecf53ee5b182ce4caa0309e63672725602a SHA-256: ca279ecf7ff8501a8422bb0489e690e9c209f466178277ef15f4d5c4c2a37dd7
62 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of external links, many of which point to similarly structured URLs on different domains. The 'PDF_SEO_LINK_FARM' heuristic indicates a mass of external PDF links, suggesting a link farm or SEO abuse tactic. The document body contains text related to 'Comcast tv guide savannah ga', which appears to be a lure to disguise the true nature of the document. The primary attack pattern involves directing users to a network of these SEO-generated PDF files.

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://kcbevco.com/uploads/1/3/0/2/130270957/130270957.html#comcast+tv+guide+savannah+ga
    • http://mehryschmittcreative.com/uploads/1/3/0/8/130814058/sufapagebikemom.pdf
    • http://cpanel.ruxtonadvisors.com/uploads/1/3/0/7/130775916/4159569.pdf
    • http://supportthemama.com/uploads/1/3/0/2/130291662/0a7f1.pdf
    • http://kevinortizsf.org/uploads/1/3/0/2/130271030/marezeg.pdf
    • http://rumadesignstudio.com/uploads/1/3/1/4/131453904/9427342.pdf
    • http://webdisk.monticellosearch.com/uploads/1/3/1/3/131380177/mizufiwani.pdf
    • https://popuxokogoju.files.wordpress.com/2020/06/29705489232.pdf
    • https://dimomofepu.files.wordpress.com/2020/06/81780239992.pdf
    • https://tiwexobidim899712672.files.wordpress.com/2020/06/77874776374.pdf
    • https://jurutetufot.files.wordpress.com/2020/06/devoxikemuwidatub.pdf
    • https://binojenon.files.wordpress.com/2020/06/85427748026.pdf
    • https://xifalir.files.wordpress.com/2020/06/fipofitibemuwajez.pdf
    • https://xikuzum.files.wordpress.com/2020/06/mojudobolu.pdf
    • https://gunurineso.files.wordpress.com/2020/06/vulekesudemuwomid.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_off0000904c.bin
5698c22599a3062d8e70f0e26da979f817b33d2ffa2bb1c7478acfa41868eff1
pdf-font-stream PDF embedded font (sfnt) at offset 0x904C 11016 bytes