Malicious PDF — malware analysis report

Static analysis result for SHA-256 be791aad3932350c…

MALICIOUS

PDF

41.9 KB Created: 2020-04-05 14:41:03 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 77d35e389c5ed2f9c11bdf55e6373c0a SHA-1: d10dd7a21f775b2e1ac8d16b5afb71818875673c SHA-256: be791aad3932350c1a3512a573f93b790e3581988fbeb7774d24b45b41d92b6b
62 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 to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution network designed to spread malicious content or manipulate search engine results. No scripts were extracted, and the document body is largely unreadable, but the heuristic firings strongly suggest a malicious intent to redirect users to a network of external resources.

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://rprofessional.net/uploads/1/3/0/5/130551006/130551006.html#qual+a+diferenca+entre+celulas+diploides+e+celulas+haploides
    • http://elitemineralsinc.com/uploads/1/3/0/3/130324234/lefuzo_jirimisugofixij.pdf
    • http://risingcrest.com/uploads/1/3/0/7/130776649/c4501.pdf
    • http://emilyanothercup.com/uploads/1/3/0/7/130775775/0e0104eb6e2426.pdf
    • http://northwestclassic.net/uploads/1/3/0/3/130313038/joxanaw_poruxo_wituxiwelax_pozagoxumivox.pdf
    • http://74-123-76-23.mgwnet.com/uploads/1/3/0/4/130477864/kelevakili_muripa_fetagezagevi_lanotat.pdf
    • http://sweaterface.com/uploads/1/3/0/2/130288488/07d5418.pdf
    • http://xn--h1aarnhh6a.xn--p1ai/uploads/1/3/1/3/131379525/9738481.pdf
    • http://qualityhearingaidrepairs.com/uploads/1/3/0/8/130874109/patezokipavafatos.pdf
    • http://midnorthcoastmechanicalandelectricalservices.com/uploads/1/3/0/5/130543025/kiwuvogitija.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_off000073f3.bin
2bd98a8e96d852b5b0a8575c9d3eb9ac0eae616107cff5603046ed429185c412		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73F3 11240 bytes

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