Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee6d6aa20d497163…

MALICIOUS

PDF

44.2 KB Created: 2020-03-08 12:20:50 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a146bc104d2b29ee1cd20cb51d47d572 SHA-1: 7d97e5f0ef810d58ad1508d893320dda47ffa489 SHA-256: ee6d6aa20d497163238216b81aee6bdfcd8749083898e14c26891f9f3a66d84a
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The document body text, though partially corrupted, indicates it is presented as a 'City and guilds functional skills maths level 1 sample assessment'. This suggests a social engineering tactic to lure users to click on the embedded links, which are likely malicious. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious nature of this PDF.

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://www.craiggivens.com/uploads/1/3/0/6/130620340/130620340.html#city+and+guilds+functional+skills+maths+level+1+sample+assessment
    • http://millennialconfessional.com/uploads/1/3/0/3/130324044/1645074.pdf
    • http://mta-sts.mx.motcc.org/uploads/1/3/0/2/130289237/4c9f1ea89e1d7de.pdf
    • http://cacorganization.org/uploads/1/3/0/5/130539660/kuxovewivopif-woxulisede-kadegemo.pdf
    • http://medicinaevolutiva.com/uploads/1/3/0/6/130603994/3342361.pdf
    • http://www.jestbecause.biz/uploads/1/3/0/4/130476814/df07a.pdf
    • http://mta-sts.mail.ridehebrides.org/uploads/1/3/0/5/130551166/xifamomawerigododuva.pdf
    • http://pintsizechef.com/uploads/1/3/0/5/130588864/dejoval.pdf
    • http://3rivers.com.au/uploads/1/3/0/3/130323697/piboxetawu-tubes-xasovomumotija-denimolemepam.pdf
    • http://www.eco2magnesia.com/uploads/1/3/0/7/130739761/kazovanonixad.pdf
    • http://todddetwiler.com/uploads/1/3/0/4/130476004/136ebe0805d3995.pdf
    • http://www.marellimedic.com/uploads/1/3/0/6/130639593/21698406f7.pdf
    • http://www.businesssupport.solutions/uploads/1/3/0/3/130379049/c22406ec.pdf
    • http://askauntieanxiety.com/uploads/1/3/0/4/130489044/5814969.pdf
    • http://darajainternational.com/uploads/1/3/0/4/130435835/lepanizewofudi_pixovodub.pdf
    • http://outdoorjava.com/uploads/1/3/0/7/130776326/e411e3e7.pdf
    • http://www.theweightlosscoach.net/uploads/1/3/0/4/130488227/lugejaza.pdf
    • http://3505brunell.com/uploads/1/3/0/7/130739592/b63c34f773b.pdf
    • http://ns2.vmrs.org/uploads/1/3/0/7/130775623/bfa4ec042c754.pdf
    • http://drawyouradventure.com/uploads/1/3/0/8/130873945/628e31e303d09d.pdf
    • http://webdisk.attawheed.org/uploads/1/3/0/4/130491008/3fb235.pdf
    • http://xfdainspector.com/uploads/1/3/0/6/130620854/64cfb.pdf
    • http://wwiitoday.com/uploads/1/3/0/8/130874257/fabusavuro.pdf
    • http://missbsgarden.com/uploads/1/3/0/4/130488987/gujaberodelaf.pdf
    • http://missbsgarden.com/uploads/1/3/0/4/130488987/gujaber
    • 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_off0000826c.bin
eeaaffcefb94739c68de6c5195f75d913ef37ba90875bf09c3d3d85d50f4fbf7
pdf-font-stream PDF embedded font (sfnt) at offset 0x826C 8348 bytes