Malicious PDF — malware analysis report

Static analysis result for SHA-256 f175c90a1d8553a3…

MALICIOUS

PDF

35.3 KB Created: 2020-03-23 13:11:54 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a49c0e20b5be057d4d5d52061434f517 SHA-1: b51355817f3c8ad77a1f9fc45eefa0ba8c0e7ade SHA-256: f175c90a1d8553a354eff4ddbaaae0dba678995c46b54dc3c828ada5f23bb340
92 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier as malicious. It contains a large number of external links, a technique often used for SEO manipulation or to distribute further malicious content. The document body, though partially corrupted, contains a reference to a 'jacuzzi bathtub manual' and the authoring application 'wkhtmltopdf', suggesting a potential lure. 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://bytecubed.io/uploads/1/3/0/6/130640136/130640136.html#jacuzzi+bathtub+manual
    • http://panhandlesensoryinc.com/uploads/1/3/0/2/130271004/sotut.pdf
    • http://bluemountainpaints.com/uploads/1/3/0/3/130313293/lovujikawure.pdf
    • http://dubairhythmicgymnastics.com/uploads/1/3/0/6/130604885/6606552.pdf
    • http://mrsottocounselingcorner.com/uploads/1/3/0/4/130483638/be295db8dd.pdf
    • http://bigskysupply.shop/uploads/1/3/0/6/130639786/8121499.pdf
    • http://monetdiamondscollection.com/uploads/1/3/0/3/130313063/kodumuxidajimutelu.pdf
    • http://crossculturalkid.net/uploads/1/3/0/5/130543552/26077.pdf
    • http://ymslivingston.com/uploads/1/3/0/4/130488410/joxezerudelu.pdf
    • http://steveburrowsmusic.com/uploads/1/3/0/3/130313212/1169337.pdf
    • http://www.timcomms.co.za/uploads/1/3/0/7/130739480/pubofowezelij.pdf
    • http://cowdung.org/uploads/1/3/0/5/130539798/3dc82c.pdf
    • http://admin.thestirnkorbcompany.com/uploads/1/3/0/6/130603834/4238117.pdf
    • http://poderdediosministerio.org/uploads/1/3/0/7/130775935/9219671.pdf
    • http://theforexsquare.com/uploads/1/3/0/5/130538866/dabuwujirowefot_zopomevivo_jetukutapu_lusugonefowino.pdf
    • http://michaeljcbarlow.com/uploads/1/3/0/7/130776529/kadun.pdf
    • http://loratadine10mgzog.greatwebsitebuilder.com/uploads/1/3/0/6/130639886/f93422d2.pdf
    • http://superiorcubes.co.nz/uploads/1/3/0/4/130483741/nikopebaxi.pdf
    • http://maternity-depot.net/uploads/1/3/0/2/130272232/b200b8.pdf
    • http://varelasinvestments.com/uploads/1/3/1/0/131070356/gekeko_fefusiletunin_ledaz_sazawe.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_off0000616c.bin
4e1d35a705e7c1364ab1dc5bab679784b95e488455c56b82faedab6d69854cb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x616C 7376 bytes

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