Malicious PDF — malware analysis report

Static analysis result for SHA-256 23318c50a33af722…

MALICIOUS

PDF

36.4 KB Created: 2020-03-21 20:49:56 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ff995589053cd5b41f030033b9ff9be8 SHA-1: 6833dd2f4eb685cc238f4c55f16152f432c82ad6 SHA-256: 23318c50a33af7222c3cf0f64c879fcecbfa92de3848b7e2385317064df897d7
62 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The document body text, though partially corrupted, includes a URL that is also present in the list of embedded links. This suggests the primary function of the document is to redirect users to a network of external sites, potentially for SEO manipulation or to serve further malicious content.

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://crittenphotography.com/uploads/1/3/0/8/130874217/130874217.html#que+es+un+lenguaje+figurado+ejemplos
    • http://coachtosuccess.co.uk/uploads/1/3/0/9/130969085/rutavegudimegu.pdf
    • http://myturkishcoffee.com/uploads/1/3/0/5/130588487/4021299.pdf
    • http://buggysplumbing.com/uploads/1/3/0/5/130539102/1079514.pdf
    • http://kristinw.com/uploads/1/3/0/3/130323268/6b0faebf00.pdf
    • http://itsaboutgiving.net/uploads/1/3/0/2/130291040/zusevulatid_dodixadisotiv_razul_jawekunerudofu.pdf
    • http://www.mean-muggin.com/uploads/1/3/0/3/130324011/gumetebaj_ziroxave_bufixines.pdf
    • http://ssrmincfl.com/uploads/1/3/0/5/130588280/pelanekene.pdf
    • http://maralynhargrove.com/uploads/1/3/0/3/130313148/naguto.pdf
    • http://www.guitartripp.net/uploads/1/3/0/4/130435583/8753560.pdf
    • http://balisurftours.info/uploads/1/3/0/7/130740368/6844043.pdf
    • http://sensiblesourcing.com/uploads/1/3/0/2/130270904/6010898.pdf
    • http://galvagnik.com/uploads/1/3/0/5/130590507/8e771ec92b9f4.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_off000066b1.bin
78a2e2c1ca08186f4aa3007a130dfccaee2c25e961107a4ddefa21b3a6d08e93
pdf-font-stream PDF embedded font (sfnt) at offset 0x66B1 7764 bytes