Malicious PDF — malware analysis report

Static analysis result for SHA-256 3edbc8b6a8f03434…

MALICIOUS

PDF

38.3 KB Created: 2020-03-29 09:50:55 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b1f17f421889dca17b68fae4cb0277d4 SHA-1: a42e46d4b75d374dc792631726b7cb1652911677 SHA-256: 3edbc8b6a8f03434f9850a6a29ac757a625b710249d0cd9f9f8090b84c7f8ec9
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a large number of external links, many of which are numerically or generically named, suggesting a link farm for SEO manipulation or to host malicious content. The document body, though partially corrupted, contains text related to 'Español 4 grado pdf 2019' and references the wkhtmltopdf tool, indicating a potential lure. The ML classifier strongly flagged this PDF as malicious. The primary intent appears to be directing users to a network of suspicious websites.

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://74-123-78-199.mgwnet.com/uploads/1/3/0/4/130435755/130435755.html#espa%C3%B1ol+4+grado+pdf+2019
    • http://mdheatingairconditioning.com/uploads/1/3/0/5/130540063/7574535.pdf
    • http://landolakesanimalhospital.preview.pethealthnetworkpro.com/uploads/1/3/1/1/131164176/xizuxubaditunelug.pdf
    • http://minimalistworkshop.com/uploads/1/3/0/6/130621928/lebafanevezese-vogebati.pdf
    • http://www.xtremeaerospacesolutions.com/uploads/1/3/0/7/130776314/worivevu.pdf
    • http://bsfastigheter.se/uploads/1/3/0/7/130739727/72d4a3a07c98675.pdf
    • http://www.kenplattlaw.com/uploads/1/3/0/8/130874504/b98f5f4e8b4.pdf
    • http://poporegon.com/uploads/1/3/0/6/130622029/sababetukufu.pdf
    • http://www.crankshaftmotorcarclub.com/uploads/1/3/0/4/130435833/kefaketizopuxib-wojozo-vatesus.pdf
    • http://travelerswine.com/uploads/1/3/0/5/130588384/06d9bb0476600.pdf
    • http://copithornetransportmanuals.com/uploads/1/3/0/7/130775195/ce653874b0c798.pdf
    • http://hostmaster.oshorisk.com/uploads/1/3/0/5/130588686/aab1fbaf7c93.pdf
    • http://feliciazoo.com/uploads/1/3/0/4/130483864/gerupisa_bavufomelu_vodavab.pdf
    • http://emphasischurch.org/uploads/1/3/0/6/130640006/9cbdc4.pdf
    • http://amandasdigitalbinder.com/uploads/1/3/1/1/131164112/japokikogefelove.pdf
    • http://www.braxiere.eu/uploads/1/3/0/5/130539678/4602251.pdf
    • http://lucyrussell.org/uploads/1/3/0/6/130639393/eae5613682c86.pdf
    • http://kioscopolaris.com/uploads/1/3/0/6/130604626/siligadirize.pdf
    • http://southaustinyoga.com/uploads/1/3/0/3/130323471/gujuxejexavifejovan.pdf
    • http://patricia44.com/uploads/1/3/0/5/130590658/7234945.pdf
    • http://haroldofagundes.com/uploads/1/3/0/2/130288939/pubifazo-wigoredemudojov-xigasoso-xawixaxilevo.pdf
    • http://tokeplusherbs.com/uploads/1/3/0/3/130323556/9586673.pdf
    • http://sainteanne-hornaing.fr/uploads/1/3/0/7/130739032/vufobimak.pdf
    • http://shivamfenceandlandscaping.com/uploads/1/3/0/6/130621593/9277f41414.pdf
    • http://rmdrainageandplumbingltd.com/uploads/1/3/0/5/130551487/zijowidanipaj-nijetavigo-dupav.pdf
    • http://www.playgroundwod.com/uploads/1/3/0/8/130814581/dixenoxidufilas.pdf
    • http://shivamfenceandlandscaping.com/uplo
    • 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_off00006bac.bin
6acf30133cb9954abb894c497d118305b0489173c16d169cfaffee42d07107b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BAC 8376 bytes

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