Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef10865dd33f8d92…

MALICIOUS

PDF

38.6 KB Created: 2020-04-04 11:52:00 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9416254a2d52cc5da3ff927a3a7e2045 SHA-1: 43e8ed93f1f6857de3ba336bc573483ed6daf7b2 SHA-256: ef10865dd33f8d92d8ce1c064095ab9480ccb824f10e1a1707e04223be6b1fc9
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. These links point to various domains, suggesting a tactic to manipulate search engine results or distribute malicious content. The document body itself is largely unreadable, but the presence of numerous external links is the primary indicator of malicious intent. 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://caindianstudies.org/uploads/1/3/0/4/130478566/130478566.html#libro+flor+y+canto+del+nacimiento+de+mexico
    • http://abyork.com/uploads/1/3/0/7/130738848/058b00b7e.pdf
    • http://ilianariverafitness.com/uploads/1/3/1/4/131438345/vupafitidobofis.pdf
    • http://food-shoppe.com/uploads/1/3/0/3/130379315/3c36bbdc3.pdf
    • http://ztxbaseballgloves.com/uploads/1/3/0/7/130774994/datetunulix.pdf
    • http://falkirkinvestmentgroup.com/uploads/1/3/0/6/130605502/binixaxodej.pdf
    • http://vianestates.us/uploads/1/3/0/6/130639521/luwuzemuv.pdf
    • http://greatyogasilve.com/uploads/1/3/0/7/130739991/d97259862.pdf
    • http://thecasscompany.com/uploads/1/3/0/3/130379096/8de4910.pdf
    • http://shreejicleaningservices.com/uploads/1/3/0/7/130775269/8856899.pdf
    • http://prohealthiswealth.com/uploads/1/3/0/7/130738944/tajuzopuji.pdf
    • http://cajunclassique.com/uploads/1/3/0/6/130605420/8345354.pdf
    • http://ninjatrn.com/uploads/1/3/0/6/130621217/4952771.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_off000069ad.bin
105b9353e47f6183366525df422a5518085eedf445bae8289f48b69dc29a3da5
pdf-font-stream PDF embedded font (sfnt) at offset 0x69AD 9272 bytes