Malicious PDF — malware analysis report

Static analysis result for SHA-256 43f4e04bb4d5e643…

MALICIOUS

PDF

32.1 KB Created: 2020-04-07 03:38:19 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 620f3fa7fdaa407778aa8a0aafc6a332 SHA-1: fa692cf94998dbfbfe71f6d0a7d8979802fe0c61 SHA-256: 43f4e04bb4d5e64388f971019f42b1fb5ede8b04d546f64bbfa1ff2b07d298e7
62 Risk Score

Malware Insights

MITRE ATT&CK
T1598 Gather Victim Identity Information T1204 Malicious Link

The PDF file contains a large number of external links pointing to various PDF documents on different domains. This technique, identified as a 'PDF link farm', is often used for SEO manipulation or to distribute malicious payloads. The embedded URLs suggest a redirection mechanism rather than direct malicious code execution within the PDF itself. 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://consciousrealignment.com/uploads/1/3/1/0/131070442/131070442.html#kenmore+water+softener+ultrasoft+175
    • http://ouradventurejournals.com/uploads/1/3/0/6/130621361/81357.pdf
    • http://steelcasejeraisy.net/uploads/1/3/0/7/130740258/levegiwasiw.pdf
    • http://chefschezvous.com/uploads/1/3/0/4/130478295/d84f310fd5702d.pdf
    • http://forevermydeck.com/uploads/1/3/0/8/130814933/jililoraxaraxalun.pdf
    • http://mainbeammineral.com/uploads/1/3/0/5/130588810/wafevoribipemu.pdf
    • http://wonderful-morocco.com/uploads/1/3/0/3/130379528/84210bcc1dd4f.pdf
    • http://clunealnerve.com/uploads/1/3/0/6/130604077/fuvadi.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_off000055d1.bin
5d82500ff127c386e67da1109ea3187a8fe1e5c912a0cfe65414db09fe955053		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55D1 7648 bytes

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