Malicious PDF — malware analysis report

Static analysis result for SHA-256 2480526bc899b28d…

MALICIOUS

PDF

50.2 KB Created: 2020-03-28 10:04:49 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a9aecaf2f5a51cd73281b3f4f57c84f3 SHA-1: 7c76cd7f5af58d789b32c8cc7ab51abb417f92c7 SHA-256: 2480526bc899b28d8c80d755c953f08d7dbe25decca73eb19569d42512036881
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to similarly structured URLs on different domains. This pattern is indicative of a link farm, often used for SEO manipulation or to distribute malicious payloads. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted from this sample.

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://globaly.services/uploads/1/3/1/4/131437671/131437671.html#programa+de+ordenamiento+ecol%C3%B3gico+territorial+del+estado+de+hidalgo
    • http://templebethmoshe.net/uploads/1/3/0/3/130323329/a47a6fecacb.pdf
    • http://inventiveparenting.com/uploads/1/3/0/2/130270903/6167045.pdf
    • http://breadhomedelivery.com/uploads/1/3/0/7/130776386/7747860.pdf
    • http://reiki.co.vu/uploads/1/3/0/9/130969813/2ca4e7a4e8.pdf
    • http://alarconconstructionllc.com/uploads/1/3/0/6/130604606/pigesavifotepa_nolodinixi_duxagekusivi.pdf
    • http://holypost.mobi/uploads/1/3/0/2/130288481/bonikokegofevete.pdf
    • http://team.ericggoodenjr.com/uploads/1/3/0/4/130488322/edde98a.pdf
    • http://grabschool.com/uploads/1/3/0/6/130639356/polipuraromu.pdf
    • http://otamassagechairsoutlet.com/uploads/1/3/0/7/130739591/gudodidudovemom.pdf
    • http://chrismurraywheelworks.com/uploads/1/3/0/6/130621746/bedadubup_pafonidinipi_lepuwiwalab_wasujuwu.pdf
    • http://nicographie.de/uploads/1/3/1/0/131070490/pusagavogup.pdf
    • http://100firesmoto.com/uploads/1/3/0/5/130589099/nikoso-zatexatejapux.pdf
    • http://cedarparkconcrete.org/uploads/1/3/0/7/130775362/420068.pdf
    • http://www.harveyrei.com/uploads/1/3/0/5/130539170/2537407.pdf
    • http://mta-sts.mx.realeconomicsolutions.com/uploads/1/3/0/2/130273789/pusawof-duzil.pdf
    • http://www.rayceramics.com/uploads/1/3/0/6/130620940/9742072.pdf
    • http://thestcharlotte.com/uploads/1/3/0/2/130289430/8203279.pdf
    • http://www.sts-secure.com/uploads/1/3/0/3/130324357/wokiba.pdf
    • http://reidangus.com/uploads/1/3/0/7/130775627/bfea2afb96ec18.pdf
    • http://clickpayrent.com/uploads/1/3/1/0/131071175/7bdd1ff4f.pdf
    • http://www.desertpours.com/uploads/1/3/0/2/130273740/miniviz.pdf
    • http://www.titanacquisition.com/uploads/1/3/0/8/130874648/e1b7da9.pdf
    • http://zolosbb.com/uploads/1/3/0/5/130550744/neburulajotisabano.pdf
    • http://marinchildrenstherapy.com/uploads/1/3/0/5/130551197/8185917.pdf
    • http://zolosbb.com/uploads/1/3/0/5/130550744/neburulajotisaban
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008455.bin
0b70d1246402196894cf8f617423cd810b5ba9c00327b3c401d0d7bf2ba7dee5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8455 8144 bytes
font_01_sfnt_off0000a257.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA257 16036 bytes

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