Malicious PDF — malware analysis report

Static analysis result for SHA-256 913021800161fe0d…

MALICIOUS

PDF

38.7 KB Created: 2020-06-07 05:52:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4000d4cccec8487ecfb2a7f4080d082 SHA-1: 053e9915021e229147a02cf17a2e0131afe00638 SHA-256: 913021800161fe0d982b77f68e1b402cf87f162d61b786229e071196437a5906
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to domains that appear to be part of a link farm. This is a common technique for distributing malicious content or conducting phishing attacks. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious link farm.

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://taojinyingkaihushouxuanhailifang.br3h.com/uploads/1/3/1/4/131483112/131483112.html#risen+3+armdr%25C3%25BCcken
    • http://arkrivercoalition.com/uploads/1/3/1/0/131070711/2833f39c54ce.pdf
    • http://weddingdancebrisbane.com.au/uploads/1/3/1/4/131454984/zifurutogud-wiwuxojefobozez.pdf
    • http://chaoscaffeineandakeyboard.com/uploads/1/3/0/5/130540420/77d12f56.pdf
    • http://akdlegal.com/uploads/1/3/0/2/130273978/9338676.pdf
    • http://sustainable-summer.com/uploads/1/3/1/3/131381712/45fbf.pdf
    • http://danielburston.com/uploads/1/3/0/9/130969623/4298752.pdf
    • http://niwawriters.net/uploads/1/3/0/7/130739490/zusazokodigazer.pdf
    • http://designinglifestylesbycorinne.net/uploads/1/3/0/9/130970022/tuvopuvefikiv.pdf
    • http://mail.dundaravefestival.com/uploads/1/3/0/8/130874539/wefekozadafar-javapologet-gavadel.pdf
    • https://bemigikub.files.wordpress.com/2020/06/kepawenutasu.pdf
    • https://sazojefos.files.wordpress.com/2020/06/51544584690.pdf
    • https://miteduxom.files.wordpress.com/2020/06/17500649484.pdf
    • https://maforebe.files.wordpress.com/2020/06/32052740366.pdf
    • https://nafevulaxa.files.wordpress.com/2020/06/gawipagofofavo.pdf
    • https://wedikul.files.wordpress.com/2020/06/91496428471.pdf
    • https://mopugatux.files.wordpress.com/2020/06/vujakoxuluwidazadasevi.pdf
    • https://vavokoze.files.wordpress.com/2020/06/nugevezidixonujetezu.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_off00006993.bin
6c5c5618b565bb3bae99d2653c3a5ed13c611405433e0bdb76ad7502ce6e0ccc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6993 10744 bytes

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