Malicious PDF — malware analysis report

Static analysis result for SHA-256 db99a6e11f2c34ef…

MALICIOUS

PDF

34.6 KB Created: 2020-04-01 12:19:54 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 63153a1ff214dc54e135a67f79301d88 SHA-1: 1afa71c7fde2d12843ca1a5305f73ed6d6f4337d SHA-256: db99a6e11f2c34efb0e55bcd732599ea4ce42243e4b48fb080ff85d10dea36d0
62 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, a technique often used for SEO poisoning or to distribute further malicious content. The heuristic 'PDF_SEO_LINK_FARM' strongly indicates this malicious intent. The document body itself is largely unreadable, but the presence of numerous URLs pointing to PDF files on various domains suggests a campaign to drive traffic to these external resources.

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://stumacmusic.com/uploads/1/3/1/3/131381411/131381411.html#rez+power+israel+houghton+letra+espa%C3%B1ol
    • http://thegivenessproject.org/uploads/1/3/0/7/130776296/2367922.pdf
    • http://installatiebedrijf-altena.com/uploads/1/3/0/5/130539287/livikoworodu.pdf
    • http://monarchtherapy.us/uploads/1/3/0/7/130775151/5044844.pdf
    • http://amylographics.com/uploads/1/3/0/7/130738707/51197468f3ea.pdf
    • http://thornwhitt.info/uploads/1/3/1/0/131070674/58cc39c06.pdf
    • http://trimate.kiwi/uploads/1/3/0/8/130873921/0c89522ab0.pdf
    • http://jordanfirstly.com/uploads/1/3/0/6/130605065/dikadozamotedop-petaluzili-vemaruze-xumexepi.pdf
    • http://pbnutrition.net/uploads/1/3/1/3/131383651/zatire.pdf
    • http://honeyheavenbees.com/uploads/1/3/1/1/131163949/zenifewiruso.pdf
    • http://424storage.com/uploads/1/3/0/7/130738887/fusefiduziziw.pdf
    • http://byalexandrialopez.com/uploads/1/3/0/7/130775027/sejajinalof.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_off0000593b.bin
171f66aea089510b1810d7813fb5f03279a0bdd2378fb13e53be419b0548767e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x593B 9416 bytes

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