Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a24bc4c064ba7fa…

MALICIOUS

PDF

58.5 KB Authoring application: pdf-parser
MD5: fc71d679f29f8e21d797fd9ec1c0b364 SHA-1: 4caa923685250aa6422b3409843fb1e2a0115cd5 SHA-256: 8a24bc4c064ba7fadc938f31afbefcdd6cfc8a82452b9eba59c3e3643e9e789c
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, forming a link farm. This is strongly indicative of a phishing or malware distribution campaign, as identified by the 'PDF_SEO_LINK_FARM' and 'ML_NYX_PDF_MALICIOUS' heuristics. The ClamAV detection further confirms its malicious nature. The embedded URLs are likely used to redirect users to malicious sites or download further payloads.

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://hrbusinesssolutions.com.au/uploads/1/3/0/9/130969116/buxejurapixuz-vuvizitajoju-puwuzitukira-farurufinel.pdf
    • http://naturesbeautysc.com/uploads/1/3/0/3/130379368/muvolixidofiked-delarivuxefizu-sewezageg.pdf
    • http://walkease.whitfieldconsulting.co.nz/uploads/1/3/0/4/130436137/midariwowotopo.pdf
    • http://www.joplincoaching.com/uploads/1/3/0/5/130590278/20a6415461705.pdf
    • http://winegiftboxes.net/uploads/1/3/0/7/130775248/641f8af2.pdf
    • http://www.magicalspincasino.org/uploads/1/3/0/6/130604046/6468fbae617120.pdf
    • http://cutekitties4u.com/uploads/1/3/0/7/130738831/fcada93797.pdf
    • http://www.brokenbowschoolofdance.com/uploads/1/3/0/6/130620627/c154be19d.pdf
    • http://1stoppropertyshop.net/uploads/1/3/0/7/130738730/2614728.pdf
    • http://mx.unionvalleybaptist.net/uploads/1/3/0/5/130551981/5434085.pdf
    • http://newlifesocal.org/uploads/1/3/0/3/130323164/331830325df074.pdf
    • http://cninc.org/uploads/1/3/0/4/130483959/tujamalo.pdf
    • http://heartwoodsurfboards.com/uploads/1/3/0/5/130551143/b0bbceff64581.pdf
    • http://rhnycexsrv1.raffertyholdings.com/uploads/1/3/0/6/130640179/16544818a04d.pdf
    • http://lspropertymaintenance.com/uploads/1/3/0/4/130436093/nupefawalebizanurim.pdf
    • http://tastydairy.club/uploads/1/3/0/3/130323755/sirojenak.pdf
    • http://pvcdesignz.com/uploads/1/3/0/7/130739850/lukukejarazuto.pdf
    • http://paunamaquina.net/uploads/1/3/0/5/130550986/wuzusasarerebar.pdf
    • http://www.hescon.com.au/uploads/1/3/0/2/130271061/2658114.pdf
    • http://7cstravel.voyagerwebsites.com/uploads/1/3/0/9/130969118/130969118.html#foods+that+are+more+alkaline+than+acidic

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001130.bin
e09552f9751291d69c1ea9bc1edfe47509e1d2bad6860dd6df1a70b62afe7dbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1130 8452 bytes
font_01_sfnt_off000092a6.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92A6 16036 bytes

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