Malicious PDF — malware analysis report

Static analysis result for SHA-256 85fe20f30d960c2b…

MALICIOUS

PDF

39.1 KB Created: 2020-03-24 05:40:43 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 83655031cef0d1a14dd7c97258b3563a SHA-1: 3cfc463fe3f7b95251eb42142f69dbf45c023842 SHA-256: 85fe20f30d960c2b3c647ed874ded3633aef1e70db1315bd08c9e04fc56651e9
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, identified by the PDF_SEO_LINK_FARM heuristic. The document body text is largely garbled but contains a Spanish phrase related to entomology, which may be a lure. The primary attack pattern involves directing users to a vast network of linked PDF files hosted on numerous domains. No scripts were extracted from this sample, and the document body did not provide clear instructions or context beyond the embedded links.

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://kreativekidsworld.com/uploads/1/3/0/7/130775692/130775692.html#que+estudia+la+entomolog%C3%ADa
    • http://emilysapp.com/uploads/1/3/0/2/130273623/e168548cc950.pdf
    • http://pc101.dadgifts.us/uploads/1/3/0/4/130483923/2a7b422794d.pdf
    • http://myclassicbaby.com/uploads/1/3/0/2/130287285/1074610.pdf
    • http://damnthemosquitos.com/uploads/1/3/0/8/130874210/memasuzipatuxo_xadizomipu.pdf
    • http://shelfinfo.org/uploads/1/3/0/5/130550912/cccc87f9d.pdf
    • http://realtimechallenges.com/uploads/1/3/0/2/130272902/witolofavatubabed.pdf
    • http://viollettauccellineri.com/uploads/1/3/0/6/130620543/tupifevidokipada.pdf
    • http://rileypdart.com/uploads/1/3/0/6/130620293/xorozebumujola.pdf
    • http://bubblebag-australia.net/uploads/1/3/0/7/130740562/7260874.pdf
    • http://godlikecombo.com/uploads/1/3/0/8/130874613/4961705.pdf
    • http://www.4riverscenter.com/uploads/1/3/0/2/130287257/begugikojojixe-kejepuda.pdf
    • http://store.advantageauburn.com/uploads/1/3/0/2/130272638/3b4d82b5.pdf
    • http://lynwilsonyoga.com/uploads/1/3/0/7/130739626/5595128.pdf
    • http://sensible-childcare.com/uploads/1/3/0/9/130969243/dagerenowan-welit.pdf
    • http://www.creativeacts.co.uk/uploads/1/3/0/5/130541462/5687659.pdf
    • http://cpanel.celticheather.com/uploads/1/3/0/6/130604735/bimom.pdf
    • http://vandalsbaseball.com/uploads/1/3/0/8/130874432/moxirebiteber-saxabutipon-giwer-kivupesutulax.pdf
    • http://neilqiu.com/uploads/1/3/0/6/130621024/fuwotutoxi_femigekok_rutibiteza.pdf
    • http://1275ministerial.com/uploads/1/3/0/3/130324004/pesokarurolaxit.pdf
    • http://curranttech.co/uploads/1/3/0/7/130739522/baliwiditavokotepub.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_off00006e44.bin
1f32e8dae73dad55c3e06f6405d333eef9a7a4a524ee7950bd619d0cce810e07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E44 8376 bytes

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