Malicious PDF — malware analysis report

Static analysis result for SHA-256 e347ce22c0850265…

MALICIOUS

PDF

41.9 KB Created: 2020-03-30 10:04:21 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: eadd2b2e0d17b973cc316024b208d895 SHA-1: 2aac7d3b28806b7235bdb0771ba2d2c3804810f1 SHA-256: e347ce22c08502656c855309cc468dbbbafa53a51d5cf4d8107f734c4adfdaf7
96 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, contains text related to 'Inscripciones kinder 2020 yucatan' and references wkhtmltopdf, suggesting a lure document. The primary purpose appears to be directing users to a vast array of websites, likely for SEO spam or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://eshibofengyunzuqiu.br3h.com/uploads/1/3/0/4/130435743/130435743.html#inscripciones+kinder+2020+yucatan
    • http://shopprayhustleslay.com/uploads/1/3/0/4/130483146/lukivewa.pdf
    • http://bendukulele.com/uploads/1/3/0/5/130551554/bepugipo_xaxadoraxijimi.pdf
    • http://eidentenergy.com/uploads/1/3/0/7/130739028/1c53e91464a.pdf
    • http://nurturingnursery.com/uploads/1/3/0/7/130739522/vudaserosaguwo-ralane-gulorebi.pdf
    • http://instituutellen.com/uploads/1/3/0/6/130621532/kajoni.pdf
    • http://bakeline.ca/uploads/1/3/1/3/131380390/naputon.pdf
    • http://flipcausefundraising.us/uploads/1/3/0/5/130588345/bafolelovud_sezogajasuwuwe_difubew_jexarumojedim.pdf
    • http://ioimpresa.net/uploads/1/3/0/4/130490277/f3f7bd11.pdf
    • http://74-123-75-101.mgwnet.com/uploads/1/3/1/3/131383698/2e4ae427b0de.pdf
    • http://homeworkstrike.com/uploads/1/3/0/6/130621248/87caeb44cd00e15.pdf
    • http://krivak.com/uploads/1/3/1/3/131380308/debf4ab559e81.pdf
    • http://sweetpapayaphotography.com/uploads/1/3/0/4/130483980/peseg.pdf
    • http://coramworkforcemodelling.com/uploads/1/3/1/3/131379828/37c1f78774.pdf
    • http://jessespringsclothing.com/uploads/1/3/0/8/130874485/1733206.pdf
    • http://insciteillinois.org/uploads/1/3/1/4/131438766/9839970.pdf
    • http://riverbecomesocean.com/uploads/1/3/0/7/130739284/8176369.pdf
    • http://oilofjoymassage.com/uploads/1/3/0/6/130621072/lufapiguwezeso.pdf
    • http://blanchardconsulting.us/uploads/1/3/0/2/130288507/17ee18e9644034.pdf
    • http://wreathsbyanita.com/uploads/1/3/0/3/130313411/0fb240aec801.pdf
    • http://pastorgregsitcom.com/uploads/1/3/0/6/130603916/4382ae98f8.pdf
    • http://realestateagenttaxsavings.com/uploads/1/3/0/8/130814858/xokotakigepubepa.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_off000077ad.bin
729f38393ef0cdbb57ebf0f8f505b4baf264652af9047a1e6ce289dbeba9578c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77AD 9140 bytes

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