Malicious PDF — malware analysis report

Static analysis result for SHA-256 aadedf5a016f5b40…

MALICIOUS

PDF

37.0 KB Created: 2020-04-10 01:00:15 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: bc6c1a19f1e4f21b0c5aee457ba325b8 SHA-1: b10020bc657785960f38cee1a12dc207d7685563 SHA-256: aadedf5a016f5b408fa26d1602b8c589e4df12dac67afb56af8f6260c8f2a7cd
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious with high confidence. The primary purpose appears to be directing users to a network of websites, likely for SEO spam or to host further malicious content. No scripts were extracted from this sample.

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://kyflowernseed.com/uploads/1/3/1/6/131637034/131637034.html#piscine+des+louvrais+pontoise
    • http://riseupgoddesses.com/uploads/1/3/1/0/131069879/zupufilodofinu.pdf
    • http://sonnestudios.shop/uploads/1/3/0/3/130313376/1686660.pdf
    • http://andarmanicouture.net/uploads/1/3/1/6/131606575/bafeduwebisawuro.pdf
    • http://bonpera.com/uploads/1/3/1/4/131406222/jawige.pdf
    • http://whatscript.com/uploads/1/3/1/4/131438228/7764418.pdf
    • http://msmanyhats.com/uploads/1/3/1/4/131453484/3364104.pdf
    • http://healingiskey.org/uploads/1/3/1/3/131398443/91e3ad9496.pdf
    • http://marionneau.pro/uploads/1/3/1/4/131406273/de4c43fdb2745c.pdf
    • http://oldsouthrentalsllc.com/uploads/1/3/0/7/130775275/9793487.pdf
    • http://mineralrightsusa.com/uploads/1/3/1/4/131437594/xizufofoxuvox-rezivojo-negebawinetos.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_off0000663e.bin
1af93ca085f61554419b49b49b3e27f690c5b3c5ffdf98bb3a3e9e9edea26ee8
pdf-font-stream PDF embedded font (sfnt) at offset 0x663E 9032 bytes