Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2c273da3fd27de9…

MALICIOUS

PDF

36.3 KB Created: 2020-04-04 10:42:29 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 414178d1276dc168f1ed41809b8e9cdc SHA-1: 70c44c09ba40d57aeaa7c79f78881f8434cfd0a4 SHA-256: d2c273da3fd27de94769cca4c1598d630866a59f9708f0b7368e66921a3e1a3a
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or distribution mechanism. The document body itself is heavily obfuscated and contains what appears to be metadata rather than user-facing content. No scripts were extracted from this sample. The primary attack pattern involves directing users to external resources, potentially for SEO manipulation or to serve further malicious content.

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://wetember.com/uploads/1/3/1/3/131398054/131398054.html#guia+montenegro+2+grado+pdf
    • http://atticrodentbarriersystemsonline.com/uploads/1/3/0/4/130475984/zokuloto.pdf
    • http://thetri-fectagroup.com/uploads/1/3/0/9/130969291/xewidalol-folok-joxeruzerubaf-pasodeta.pdf
    • http://agiido.net/uploads/1/3/1/3/131380558/f4e7a7ef2.pdf
    • http://kayteestore.com/uploads/1/3/0/6/130621257/ac4d08cb27.pdf
    • http://nicolemattoneillteam.com/uploads/1/3/0/4/130490301/nedakuwowezawabas.pdf
    • http://greyknittykitty.com/uploads/1/3/0/3/130324158/vikatuzobol-vetojoxa-monaxukufulil.pdf
    • http://b2excavatingllc.com/uploads/1/3/0/7/130775286/3331725.pdf
    • http://presidentialcigarden.com/uploads/1/3/1/3/131384250/52716.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_off0000624b.bin
8c257589f4d0724f911036c62e80d8f8a4383703487eb5a2cbf31e2d5e706d23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x624B 9076 bytes

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