Malicious PDF — malware analysis report

Static analysis result for SHA-256 53d05358290ea785…

MALICIOUS

PDF

101.8 KB Created: 2020-04-05 03:38:42 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 89131f1e110dc721f221a6d1d5a12043 SHA-1: 919a55e0d4076b6de1a1f78bb54abfcf374c7f2b SHA-256: 53d05358290ea78540477015b0bf3aefd2841d01b06838956b90e92da39e1e87
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, a technique often used for SEO manipulation or to redirect users to malicious sites. The document body contains garbled text and a reference to a URL, which is consistent with the heuristic findings of a PDF link farm. No scripts were extracted from this sample, limiting further analysis of its behavior.

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://kimresine.ca/uploads/1/3/0/7/130776478/130776478.html#cual+es+la+teoria+del+intercambio+entre+lider+y+miembro
    • http://systemy-szklane.eu/uploads/1/3/0/7/130775363/dolutirudomew_povobo_biborusukubaj_nenejax.pdf
    • http://hostmaster.gandjstarkey.co.uk/uploads/1/3/1/4/131437504/ridax-pitibikufare.pdf
    • http://joannetharbyartist.com/uploads/1/3/0/3/130323403/2953f346.pdf
    • http://dmvluxurylimo.com/uploads/1/3/0/7/130776321/jagiti.pdf
    • http://kadenonlineworkingdogschool.com/uploads/1/3/0/5/130588270/madulatibisuzanox.pdf
    • http://ox-cart.com/uploads/1/3/0/2/130288567/4118031.pdf
    • http://investegy.net/uploads/1/3/1/4/131452838/vivafened.pdf
    • http://terasotapartners.com/uploads/1/3/0/3/130323511/lewowanipaxiwuminop.pdf
    • http://sundoggallery.com/uploads/1/3/0/5/130589058/5824393.pdf
    • http://pacficcrestcomedy.com/uploads/1/3/1/0/131070045/wiben.pdf
    • http://shaylaecole.com/uploads/1/3/1/3/131383931/beretus_rupufinituguton_gowed.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000144cd.bin
d500cf12384b725ccd0cbf1e03540496e699aa4f1be7b0a2ca8b7b3e4c83661d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x144CD 10060 bytes
font_01_sfnt_off000168d1.bin
e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x168D1 2652 bytes
font_02_sfnt_off00017238.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17238 16036 bytes

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