Malicious PDF — malware analysis report

Static analysis result for SHA-256 c08eb1fa76cf8442…

MALICIOUS

PDF

38.8 KB Created: 2020-06-07 03:02:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04628bb95590c8759864cd1e84bed9e2 SHA-1: e4f55ba5f2809859d1297dfa12f06937f0d99559 SHA-256: c08eb1fa76cf84425e2d69a833d7f7d08b18ce7aa0f43f679567dc678ed69374
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to domains that appear to be part of a link farm designed to host malicious content. The ML classifier strongly indicated maliciousness. The embedded URLs and the PDF_SEO_LINK_FARM heuristic suggest a lure to download further malicious content or redirect to phishing sites.

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://ahcup.org/uploads/1/3/0/2/130270793/130270793.html#manual+de+epidemiologia+y+salud+publica
    • http://wnfishing.net/uploads/1/3/0/7/130775466/73e944865ca.pdf
    • http://capitolchristianacademy.com/uploads/1/3/0/7/130776745/vibivubapuzewi-kopop-nozeseboni.pdf
    • http://christiansincable.com/uploads/1/3/0/8/130813786/wopipotegoso.pdf
    • http://inceptionsdesign.net/uploads/1/3/0/5/130538994/fijogekamo-pasigiketakami-kobivedorojif.pdf
    • http://standardmatinc.com/uploads/1/3/0/2/130288926/gunapikewixepibalixu.pdf
    • http://vintageautoma.com/uploads/1/3/0/5/130542866/ba4c40.pdf
    • http://weddingdressesnewhampshire.com/uploads/1/3/0/7/130739098/2278325.pdf
    • http://bites-brains-3.com/uploads/1/3/0/6/130639140/995b11.pdf
    • https://rawosevatati.files.wordpress.com/2020/06/38208135184.pdf
    • https://ginefefe.files.wordpress.com/2020/06/gevurorowedexuwopikefot.pdf
    • https://zowebamize.files.wordpress.com/2020/06/3926768793.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_off00006a48.bin
40ab1282549048774d68bddb693a923eb00bb9b7d9a259b384c4615260636cf9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A48 10992 bytes

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