Malicious PDF — malware analysis report

Static analysis result for SHA-256 a43746f663308388…

MALICIOUS

PDF

75.8 KB Created: 2020-03-24 07:44:58 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6d458343057d9b0fba6865fdeb7fe099 SHA-1: 8993c072955ef1362dc9f0af3d5876002fec4a5a SHA-256: a43746f6633083880840cf78afe76fc57df5f015a8384de9a8c2fe2dfbfc099d
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are dynamically generated and point to potentially malicious content. The document body, though heavily obfuscated, contains references to a 'Yamaha motif es6 manual pdf', suggesting a lure to trick users into visiting these links. The primary attack pattern involves leveraging a link farm to distribute malicious content.

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://michaudwellness.com/uploads/1/3/0/2/130272940/130272940.html#yamaha+motif+es6+manual+pdf
    • http://yingfengguojiyulechengbaijiale.f18.ebkf.org/uploads/1/3/0/8/130814020/7108145cec.pdf
    • http://wedocover.com/uploads/1/3/0/5/130590589/4857804.pdf
    • http://brenda4villa.com/uploads/1/3/0/6/130621934/9c4bf1a3761e72.pdf
    • http://alalamyfactory.com/uploads/1/3/0/5/130543045/973606.pdf
    • http://myurbanhermit.com/uploads/1/3/0/2/130289662/3973176.pdf
    • http://mta-sts.mx.stjohnlandconservancy.org/uploads/1/3/0/3/130323208/f692f554165e68.pdf
    • http://ipshopping.net/uploads/1/3/0/6/130621210/kebom.pdf
    • http://www.mobileleadershipseries.com/uploads/1/3/0/5/130588676/busopuxolod.pdf
    • http://www.rdzproducts.com/uploads/1/3/0/3/130323224/gutiwutumogukipig.pdf
    • http://sjnbasketball.org/uploads/1/3/0/3/130379158/c01e5e7d.pdf
    • http://tsunamielectrical.com/uploads/1/3/0/8/130874332/gozezagu.pdf
    • http://mail.photopozza.com/uploads/1/3/0/9/130969759/560454c22a1542.pdf
    • http://thequailsnest.com/uploads/1/3/0/6/130604902/fenidali.pdf
    • http://rob-write.com/uploads/1/3/0/5/130544385/jorijel-bekaloka-jusibola-tulasovene.pdf
    • http://almamarin.com/uploads/1/3/0/5/130590537/falavulufamazated.pdf
    • http://physioconcepts.com.au/uploads/1/3/0/8/130815124/ad168d.pdf
    • http://tm22athletes.com/uploads/1/3/0/7/130776434/vafisav.pdf
    • http://mysupplyguyatl.com/uploads/1/3/0/4/130489572/xufalasagira-desigilura.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f531.bin
8b0a5511e6dcaa14a4b26b3cc6dfd5f5b850748279eb163ea0c6a0915cd50bd2
pdf-font-stream PDF embedded font (sfnt) at offset 0xF531 8412 bytes
font_01_sfnt_off0001154e.bin
2c901fde797cbb8c0a99019b1107f82f832168dd0eb81d104dd45768a3a1c65d
pdf-font-stream PDF embedded font (sfnt) at offset 0x1154E 2784 bytes