Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5597f4c4cf75a80…

MALICIOUS

PDF

36.9 KB Created: 2020-04-06 11:20:23 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 92814db020dda6677194ad620f8ecfac SHA-1: 3ad05da9891ea92abcfa8b920a9e142ebe8fb9fd SHA-256: d5597f4c4cf75a8096a1fcc16a0c87c3b2c1222906221251b99265b7917661ce
62 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which point to other PDF files on various domains. The heuristic 'PDF_SEO_LINK_FARM' indicates a deliberate attempt to create a link farm, likely for SEO manipulation or to distribute malicious content across multiple sites. The document body itself is largely obfuscated but contains references to the URLs. 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://brandbold.net/uploads/1/3/1/4/131438694/131438694.html#5+ejemplos+de+adverbios+de+tiempo
    • http://neyneytv.com/uploads/1/3/0/6/130640010/lewunimejofez.pdf
    • http://4streets.org/uploads/1/3/0/8/130813548/dolajefasavok_kugipezomazowe.pdf
    • http://lofotenmaps.com/uploads/1/3/0/2/130287401/6513551.pdf
    • http://reiwang.com/uploads/1/3/0/2/130271131/zoseribifonovas.pdf
    • http://experiencegarda.com/uploads/1/3/0/6/130639491/6044106.pdf
    • http://giroguides.com/uploads/1/3/0/8/130813604/256925e0.pdf
    • http://riverridgeagency.com/uploads/1/3/0/6/130639581/teganases-tulizal-wuvativikef.pdf
    • http://bustite.com/uploads/1/3/0/4/130483047/1706714.pdf
    • http://gainstriveband.com/uploads/1/3/0/2/130289749/mavefefojedox.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_off00006696.bin
d73bbe4e8ddc8183b2690cc77d02db9d4f7e9592611083ee4798296b566050f5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6696 8472 bytes