Malicious PDF — malware analysis report

Static analysis result for SHA-256 908996f0580078b5…

MALICIOUS

PDF

38.9 KB Created: 2020-06-06 04:56:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a20da089870b0751006bc0f4030bd5d6 SHA-1: 62ff5b06ca145b47faaa3feb3f3f91ef1eb2d41e SHA-256: 908996f0580078b52b7b6d76d240f829c9010a739dc66d34838b9edf6bb398c5
92 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to suspicious domains and are likely part of a link farm or SEO spam campaign. The heuristic 'PDF_SEO_LINK_FARM' specifically indicates a large number of external PDF links generated for SEO purposes. The document body, though partially corrupted, contains a URL related to 'usb type c', suggesting a lure to attract clicks. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://devonscoolcakes.net/uploads/1/3/0/6/130620389/130620389.html#what+is+usb+type+c
    • http://webmail.elitestarinspections.com/uploads/1/3/0/8/130815031/6947390.pdf
    • http://guidancetoheal.com/uploads/1/3/0/4/130483515/766600.pdf
    • http://esmcknightinsurance.com/uploads/1/3/0/4/130490221/ritodesebi.pdf
    • http://cellfixtexas.com/uploads/1/3/0/6/130640013/2ec05ad822.pdf
    • http://mta-sts.mx.ohsra.com/uploads/1/3/1/3/131379015/jesifaz-movezuwokitej-jitemenutavo-derapukupipi.pdf
    • http://devonscoolcakes.net/uploads/1/3/0/6/130620389/terms.html
    • http://devonscoolcakes.net/uploads/1/3/0/6/130620389/dmca.html
    • http://devonscoolcakes.net/uploads/1/3/0/6/130620389/policy.html
    • https://ninolukubo.files.wordpress.com/2020/06/94077595941.pdf
    • https://zawonaj.files.wordpress.com/2020/06/takujibuwuxozijigewu.pdf
    • https://vawimafebugi640179855.files.wordpress.com/2020/06/rosikakenaza.pdf
    • https://kefizup209086913.files.wordpress.com/2020/06/76561536951.pdf
    • https://jofasekuje.files.wordpress.com/2020/06/13751132136.pdf
    • https://resufago.files.wordpress.com/2020/06/13358056299.pdf
    • https://lugopago.files.wordpress.com/2020/06/23508560487.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_off00006370.bin
94bccc532bb16f60b1df551a09ee75f08a12c64d8753749cf5cc6d312ee85a17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6370 18388 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.