Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8fa4f636f2b5567…

MALICIOUS

PDF

35.6 KB Created: 2020-06-07 11:49:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b04640ed167b601f02f49aa1fc7eb3d SHA-1: 0ff29b950c20bc5155ab664003ddeddf36951b9c SHA-256: b8fa4f636f2b5567f1e76460f243b7dad23c8ea11a0e45fc791226eec82f2973
62 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or SEO manipulation tactic. The embedded document body text is largely unreadable, but the presence of URLs and the heuristic firings strongly suggest a malicious intent to redirect users to potentially harmful content or to manipulate search engine rankings. No scripts were extracted from this sample.

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://moderngentlemanacademy.com/uploads/1/3/0/9/130969315/130969315.html#exerc%25C3%25ADcios+de+acentua%25C3%25A7%25C3%25A3o+oxitona+par
    • http://mail.sunmountainsoul.com/uploads/1/3/0/5/130539311/tizebojapom-gewebibuv-rifimigutonosaf.pdf
    • http://cpanel.iolascott.com/uploads/1/3/1/8/131856331/vogike_rukabibugowosan_jojijixefexana.pdf
    • http://hostmaster.littletweetstationery.co.uk/uploads/1/3/1/8/131872149/21671c3631e.pdf
    • http://christiansthoughts.com/uploads/1/3/1/4/131438523/laxipuvuregij.pdf
    • http://74-123-78-231.mgwnet.com/uploads/1/3/0/6/130621276/ee3f9.pdf
    • http://twistedtreeguy.com/uploads/1/3/1/3/131398128/fozukimegapeme.pdf
    • http://julianneensley.com/uploads/1/3/0/4/130483479/001b15b250ba2.pdf
    • http://momentswithmj.net/uploads/1/3/0/8/130814868/foruj.pdf
    • http://fc-artwork.com/uploads/1/3/1/4/131438190/349812.pdf
    • https://bokekesu.files.wordpress.com/2020/06/sufoni.pdf
    • https://kusulubir.files.wordpress.com/2020/06/31423332049.pdf
    • https://wefefusijuro.files.wordpress.com/2020/06/xonuxolaguvevos.pdf
    • https://mudedusenudu.files.wordpress.com/2020/06/26218373927.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_off00005bab.bin
bdabe8999143d3ea6b9e3c3bd438e180526fc0ce6065fda5c1f7dabf7d0974f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BAB 12484 bytes

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