Malicious PDF — malware analysis report

Static analysis result for SHA-256 2051b9dbbb442455…

MALICIOUS

PDF

33.0 KB Created: 2020-03-29 01:40:34 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7b8052256779cae74e15e57b87ebbc91 SHA-1: 3f99c82967d564edda4ee2e590af0bbcc3d072fd SHA-256: 2051b9dbbb4424557403de931a5703b56c362beb1d7fbae177a4fa2a63434f3c
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, a technique often used for SEO poisoning or to redirect users to malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this behavior. The document body contains a mix of Spanish text related to geometry and metadata from the wkhtmltopdf tool, suggesting it was programmatically generated. No scripts were extracted from this sample.

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://lennoxweb.com/uploads/1/3/0/7/130739856/130739856.html#partes+de+la+circunferencia+y+circulo
    • http://ten8cpr.com/uploads/1/3/0/5/130588547/4819647.pdf
    • http://waxplast.com/uploads/1/3/0/5/130551095/wuzerepajenu.pdf
    • http://besinfinityinspections.com/uploads/1/3/0/5/130590666/metorifejafavo_novir.pdf
    • http://gb4a.co.uk/uploads/1/3/0/7/130775221/e160b46e706030.pdf
    • http://artiart.store/uploads/1/3/0/5/130542996/8671765.pdf
    • http://smartsara.com/uploads/1/3/0/6/130604010/xakobipen_rolekusubisif_sujurizukusa_vikepimipanes.pdf
    • http://irishcca.com/uploads/1/3/0/4/130476575/jolefuvafofok.pdf
    • http://gradlauncher.com/uploads/1/3/0/6/130604359/7342130.pdf
    • http://vividimagination13.net/uploads/1/3/0/9/130969485/kediviwebugorujabis.pdf
    • http://jhtour.net/uploads/1/3/0/9/130970003/f3cacb.pdf
    • http://mystparanormal.com/uploads/1/3/0/5/130589385/20540a1.pdf
    • http://ballicocressey.com/uploads/1/3/0/7/130776101/3308827.pdf
    • http://hr-serious.com/uploads/1/3/0/6/130621683/053b832a4ce.pdf
    • http://givinghomes.net/uploads/1/3/0/8/130874540/gomosewa.pdf
    • http://aretefin.com/uploads/1/3/0/4/130477090/2785898.pdf
    • http://hostmaster.tbhermans.nl/uploads/1/3/0/6/130639037/ponifuvirononolulade.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_off000059d1.bin
659b2507f4ae00d480441e4f585777300f61c219cf820a761b4777523053e15b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59D1 7684 bytes

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