Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fdf9a3f5186d404…

MALICIOUS

PDF

40.9 KB Created: 2020-04-03 11:05:15 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 87534fc652ead37be3f96cf1bb5c070b SHA-1: f5d16650bc4e50e4c35879342c7eee3fd2c3075d SHA-256: 2fdf9a3f5186d404f3014872d758574f519ccb125179eadca7300a8219428ea9
62 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, many pointing to other PDF files hosted on various domains. This pattern is indicative of a link farm designed to distribute traffic or host malicious content. The primary heuristic identified a 'PDF_SEO_LINK_FARM' which strongly suggests this is the intended behavior. The document body, though partially corrupted, contains a URL that aligns with the observed link farm structure.

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://businesswritngmasters.com/uploads/1/3/0/3/130324419/130324419.html#how+to+create+table+of+contents+in+markdown
    • http://borrowedbridals.com/uploads/1/3/1/3/131398517/04e2db2a.pdf
    • http://athywaterways.com/uploads/1/3/0/6/130604519/5744263.pdf
    • http://growmywealth.net/uploads/1/3/0/4/130483577/tikelapuxi.pdf
    • http://maxtrainerincome.com/uploads/1/3/0/2/130270951/wadobadidedega.pdf
    • http://kingaroygardencentre.com/uploads/1/3/0/7/130775229/1833710.pdf
    • http://coreconsulting.com/uploads/1/3/0/7/130739747/lutif_fegalivubulu_weles_kifulisasuwa.pdf
    • http://journalwithjessandjenny.com/uploads/1/3/1/4/131454808/mupojizavedozid.pdf
    • http://nevermoreacres.org/uploads/1/3/0/7/130739693/b819fc.pdf
    • http://pedrolisbontours.com/uploads/1/3/0/2/130274376/5137353.pdf
    • http://abletradeco.com/uploads/1/3/0/7/130740458/95c969a7741e4a6.pdf
    • http://precisionoutreach.org/uploads/1/3/0/8/130874634/39ca5ea0e1ca21.pdf
    • http://celestediputada.com/uploads/1/3/0/2/130272353/f91fdf34.pdf
    • http://omarsamaniego.com/uploads/1/3/0/4/130483761/jiruxedadul-xurukivik-ferigadom.pdf
    • http://eccevideos.net/uploads/1/3/0/6/130604498/1620049.pdf
    • http://globaldancearts.org/uploads/1/3/1/3/131398431/dalaxokofawoviv_tuwopedavodut_xebuzulovima.pdf
    • http://luxurylimocda.com/uploads/1/3/0/9/130969343/kulik-kulopijakaneges-gesaludex.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_off00007451.bin
bd23b0e876059e301e21eb4611297d1f7309cd2d53950f480d52918e83d1f14c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7451 8772 bytes

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