Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaf526786b8073db…

MALICIOUS

PDF

38.6 KB Created: 2020-06-12 07:38:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: afad6aee9c490905dc4bb6a86e019a96 SHA-1: 21f2494bc0c734ccbae4ac80dfdd2a01ff46cf8d SHA-256: aaf526786b8073db8547d05d4372e9d28c845a593e84021e9dd24557c03f5f0e
92 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, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also strongly indicated maliciousness. The embedded URLs suggest a link farm or SEO abuse tactic, potentially leading to malicious content distribution or phishing. 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://slaten-wedding.rominastiebenphotography.com/uploads/1/3/0/6/130621401/130621401.html#datasheet+atmega16+pdf
    • http://mswilliamsonline.com/uploads/1/3/0/7/130776795/3389615.pdf
    • http://fortheloveofrose.com/uploads/1/3/0/3/130379370/46fdfebebd7d.pdf
    • http://74-123-77-36.mgwnet.com/uploads/1/3/0/4/130436234/839e7.pdf
    • http://thedaughtersofdissent.com/uploads/1/3/1/0/131071117/meborugeze-jujujidare-nomawejo-dowemisafapogu.pdf
    • http://maillardreactions.com/uploads/1/3/0/6/130604699/8f29338075.pdf
    • http://mail.whylifeministries.com/uploads/1/3/0/5/130589348/zivinofutuguropukov.pdf
    • http://cpanel.grsymphonicband.org/uploads/1/3/1/4/131452880/b83f0fd30.pdf
    • http://mta-sts.mx.jimjturner.com/uploads/1/3/0/2/130273790/felanatigewig.pdf
    • http://ipmofwa.com/uploads/1/3/1/4/131453170/kuxid_mebuxunigimimu.pdf
    • http://mail.wildernessfamilies.com/uploads/1/3/0/5/130588380/jilepixavum-komogajujofa-givotime-kizinepis.pdf
    • http://univentapp.com/uploads/1/3/0/6/130620620/7312533.pdf
    • http://coetani.com/uploads/1/3/1/4/131438707/wipivanuzosumefanob.pdf
    • https://botojime.files.wordpress.com/2020/06/45295783888.pdf
    • https://mabumuwilux.files.wordpress.com/2020/06/bejatipu.pdf
    • https://kovimaj.files.wordpress.com/2020/06/vobotum.pdf
    • https://bujavam.files.wordpress.com/2020/06/mixafelapi.pdf
    • https://pavofozib.files.wordpress.com/2020/06/mapikubevafaxifokorobejev.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_off00006931.bin
21fb51c9fb02e9f5f7d1f8ec4dbd4aa5b156fe1b4e2efcf84b7699064e7d0ec5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6931 10504 bytes

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