Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaa3b997901ccfb8…

MALICIOUS

PDF

41.0 KB Created: 2020-03-11 08:51:23 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 99390fe164c0dce2263324589122ad03 SHA-1: 81fccebd409b8184dab651265e4adde543b9d422 SHA-256: eaa3b997901ccfb80c0fdd45d369a64e6e88b79534c78cd8a618636bb9ab825d
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO poisoning attack. The embedded URLs are likely used to distribute malicious content or redirect users to phishing sites. No scripts were extracted from this sample, but the sheer volume of outbound links is highly suspicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://thiessenfamilyfoundation.com/uploads/1/3/0/7/130739776/130739776.html#cardiac+arrest+guidelines+uk
    • http://alissamariemusic.com/uploads/1/3/0/4/130490056/murejojidetak.pdf
    • http://jesusdharma.net/uploads/1/3/0/5/130589385/bowakobij_nojaga.pdf
    • http://mta-sts.przedszkole82.bialystok.pl/uploads/1/3/0/8/130874565/temopune-lovazuvajapado-kebarerel-wajivivijedorer.pdf
    • http://zendla.com/uploads/1/3/0/6/130621305/4111403.pdf
    • http://testsite.online/uploads/1/3/0/6/130603925/5843862.pdf
    • http://hostgroningen.com/uploads/1/3/0/7/130738715/mebexu.pdf
    • http://mrebeccaprattfortowncouncil.org/uploads/1/3/0/6/130604419/8582709.pdf
    • http://arwuso.com/uploads/1/3/0/6/130639139/3770489.pdf
    • http://www.rainbowhealingandtherapies.co.uk/uploads/1/3/0/6/130640114/7182429.pdf
    • http://midwestcraftshow.com/uploads/1/3/0/6/130604018/riwil_dalotedaxoz_kebad_tulinusulogage.pdf
    • http://loveandadog.net/uploads/1/3/0/5/130590410/6959062.pdf
    • http://thefashionfarmer.com/uploads/1/3/0/6/130604552/4477847.pdf
    • http://www.rahimlovesnena.com/uploads/1/3/0/5/130588716/xijoz.pdf
    • http://mountainmodelaires.org/uploads/1/3/0/7/130775916/momolanukow_buvofowunuro_velonuziwag.pdf
    • http://mta-sts.mail.sovtrc.org/uploads/1/3/0/7/130738940/jugeziwowopanopefafo.pdf
    • http://keepcalmandswitchover.co.uk/uploads/1/3/0/3/130313049/joxadunezopifilen.pdf
    • http://mapleshirefarms.com/uploads/1/3/1/0/131070457/toredaxoju.pdf
    • http://lilyspadpetcare.com/uploads/1/3/0/7/130740056/b3f1e.pdf
    • http://techliftx.com/uploads/1/3/0/7/130738607/nokedumujimok.pdf
    • http://www.algebra.mybooksucks.com/uploads/1/3/0/8/130874377/3c9d47.pdf
    • http://speechlessineurope.org/uploads/1/3/0/7/130775400/5776640.pdf
    • http://adsl-63-204-18-31.benefitplans.org/uploads/1/3/0/6/130622007/suxumivadidux-rutid-kewuzokosagiti.pdf
    • http://www.sarahbartholow.com/uploads/1/3/0/8/130814014/7ea6b8daa1b2c44.pdf
    • http://www.sarahbartholow.com/uploads/1/3/0/8/1308
    • 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_off00007727.bin
d65ed77444506c77128f3de748bde825175901133dac762014544b03c20574b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7727 7984 bytes

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