Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cb65740a164ee1b…

MALICIOUS

PDF

33.4 KB Created: 2020-06-02 17:43:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3edf76dd9329f2d31233636576a272c SHA-1: 96d2905f6b11d92b5a9adeac18e2292318a4fa83 SHA-256: 7cb65740a164ee1bb119f9f7f20e3ce06c6c79d4bcbd87df5a0259b51faf20fb
92 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm designed to lure users to potentially malicious content. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious nature of the document. The primary attack pattern involves directing users to external URLs hosted on domains like lindawallace1.net and chinoxx.com, which are likely used for phishing or malware distribution.

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://lindawallace1.net/uploads/1/3/0/7/130739289/130739289.html#animator%2527s+survival+guide
    • http://chinoxx.com/uploads/1/3/0/7/130775136/bepifumivimubujaz.pdf
    • http://theeqc.org/uploads/1/3/0/2/130270836/9846956.pdf
    • http://butterflylouise.blog/uploads/1/3/0/3/130323724/ligizi.pdf
    • http://destinyusaleggings.com/uploads/1/3/1/4/131407547/nuxixuwetofogesu.pdf
    • http://lindawallace1.net/uploads/1/3/0/7/130739289/terms.html
    • http://lindawallace1.net/uploads/1/3/0/7/130739289/dmca.html
    • http://lindawallace1.net/uploads/1/3/0/7/130739289/policy.html
    • https://tipaxoxabenu.files.wordpress.com/2020/05/rurebaperula.pdf
    • https://robesezidir.files.wordpress.com/2020/05/62791976335.pdf
    • https://supufusifiv.files.wordpress.com/2020/05/kotamewedoloj.pdf
    • https://kijemigijaz.files.wordpress.com/2020/05/42690296701.pdf
    • https://panupobeguki443392900.files.wordpress.com/2020/05/99767248732.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_off0000588a.bin
cf1bd8d55e45208622c02212d6b638d24a5e09aa80b3bcb406d351e9337b6467		 pdf-font-stream PDF embedded font (sfnt) at offset 0x588A 10252 bytes

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