Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4e410a946e8a70f…

MALICIOUS

PDF

58.6 KB Created: 2020-04-07 05:17:05 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b95559da1c14a0bb1203718ae194bcf5 SHA-1: 81665d30961ce295e7e80b2f623632eda2f75ca1 SHA-256: d4e410a946e8a70f8ef6cff498e02eb4a75a002fe2660b983284d105f1d8ffcd
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The PDF_SEO_LINK_FARM heuristic specifically identified this behavior, indicating a likely attempt to drive traffic to a network of controlled domains. No scripts were extracted, but the presence of numerous unknown-reputation URLs suggests a delivery mechanism for further malicious activity.

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://reclaimyourspaceandlife.com/uploads/1/3/0/6/130620296/130620296.html#sharp+aquos+lc-70c8470u
    • http://theshiregardens.com/uploads/1/3/0/7/130738972/luwapesedakipa_xowupujam.pdf
    • http://chiefexecutiveoffice.us/uploads/1/3/1/0/131069890/100f2115.pdf
    • http://madronahospitality.com/uploads/1/3/0/4/130488087/zupetolajo.pdf
    • http://artsphynx.com/uploads/1/3/0/7/130739898/7334415.pdf
    • http://elrobotdesigns.com/uploads/1/3/1/1/131163859/4cabda37.pdf
    • http://manta-visions.com/uploads/1/3/0/2/130271016/960535.pdf
    • http://onyxandoak.net/uploads/1/3/0/7/130775411/fadimafewe.pdf
    • http://fillmoreeyeclinic.net/uploads/1/3/0/6/130621645/3901227.pdf
    • http://artstorechicago.com/uploads/1/3/0/2/130288329/mujen.pdf
    • http://godsdreamwoman.org/uploads/1/3/0/6/130604955/6675715.pdf
    • http://sse3312dbqtheundergroundrailroad.com/uploads/1/3/0/7/130738531/d87fe57d9e2a3.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a213.bin
1b18bd6ec537e053048e472cb4b172b0277154b38bc58b58883bbc4f235333d3
pdf-font-stream PDF embedded font (sfnt) at offset 0xA213 10104 bytes
font_01_sfnt_off0000c73f.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63
pdf-font-stream PDF embedded font (sfnt) at offset 0xC73F 16036 bytes