Malicious PDF — malware analysis report

Static analysis result for SHA-256 9be220fb806505ce…

MALICIOUS

PDF

57.4 KB Created: 2020-03-08 04:41:04 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 421ac918b1dbf1b678e595c1182b09b6 SHA-1: 0ac175ec35a1e34965b19e70f03497de5124758b SHA-256: 9be220fb806505ce4966ff52f16d3b8888d1471c9457c51cb0073d92bbed3fca
62 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique often used for SEO manipulation or to distribute malicious payloads. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, indicating a potential attempt to drive traffic to numerous unrelated PDF documents hosted across different domains. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to determine the exact nature of the payload beyond the link farm. The primary IOCs are the numerous URLs pointing to external 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://host129.carmichaelnl.com/uploads/1/3/0/7/130775484/130775484.html#pathogenesis+ascaris+lumbricoides
    • http://rtpreston.com/uploads/1/3/0/7/130776561/divevimaxinax_matureje_gutavirolopido_lulurise.pdf
    • http://www.spinnerdavefishreport.com/uploads/1/3/0/6/130639852/6227075.pdf
    • http://virtualbiblestudies.com/uploads/1/3/0/2/130271048/7565467.pdf
    • http://www.thestraightsplay.com/uploads/1/3/0/5/130551427/b387bf169d.pdf
    • http://my-medicare-insurance.com/uploads/1/3/0/5/130542982/wufowun.pdf
    • http://www.exteriorcontractorca.com/uploads/1/3/0/5/130551335/de06f896ea4.pdf
    • http://coopersflamethrower.com/uploads/1/3/0/6/130639701/taveje-poninuwan.pdf
    • http://isaacbarberedhe.com/uploads/1/3/0/5/130550703/putasifitizivaji.pdf
    • http://patsyshairfashion.com/uploads/1/3/0/5/130543511/3187908.pdf
    • http://m.findapartyconsultant.com/uploads/1/3/0/6/130604855/wudemuwonem.pdf
    • http://musiccitypetpartners.net/uploads/1/3/0/6/130604687/3281916.pdf
    • http://mta-sts.mail.wopekit.com/uploads/1/3/0/2/130270979/8915b591ee2.pdf
    • http://loopyllama.shop/uploads/1/3/0/7/130775084/faritolera.pdf
    • http://conniezator.com/uploads/1/3/0/8/130874067/2684782.pdf
    • http://www.ofcpineapplepoker.com/uploads/1/3/0/2/130289198/saxudebivoxo.pdf
    • http://empowherfbbc.org/uploads/1/3/0/6/130639037/gukamusaf.pdf
    • http://waggawaggaprobus.waggamatters.com/uploads/1/3/0/2/130273623/vevepol-mesijunufevur-vumaju.pdf
    • http://bluetarpfitness.com/uploads/1/3/0/4/130491075/doxemef-wufikubopeka-fiwide.pdf
    • http://nashyhealthcareltd.co.uk/uploads/1/3/0/6/130620547/670383b896ed5e8.pdf
    • http://paymargoodmanconsulting.com/uploads/1/3/0/7/130740173/3219618.pdf
    • http://www.teamjaffa.com/uploads/1/3/0/6/130621444/wadekuxavagaxoz-fefotepatovoj-vabolavodozefe.pdf
    • http://nannytherapy.net/uploads/1/3/0/2/130287500/tibod.pdf
    • http://www.idealrestorationoh.com/uploads/1/3/0/6/130603916/165703.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_off0000b589.bin
11a29cb877472b4f2b70c78935a1e416257e8f7f72904491078d69a3ab53c868		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB589 9156 bytes

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