Malicious PDF — malware analysis report

Static analysis result for SHA-256 284abd017f9e3771…

MALICIOUS

PDF

40.0 KB Created: 2020-04-06 02:55:50 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5fb0b1778dc5623cdb6598b8102289ec SHA-1: 5d3b7f6bc622a02a828040acd011d5b665de59ef SHA-256: 284abd017f9e37719612c749654a9e538815f609171f5b182b07206db44941a1
62 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, a technique often used for SEO poisoning or to distribute further malicious content. The document body itself is largely obfuscated but contains references to the URLs, suggesting a lure to click through to these external resources. No scripts were extracted, and the primary malicious behavior observed is the mass linking.

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://kateabington.com/uploads/1/3/0/6/130621988/130621988.html#lista+de+verbos+en+ingles+regulares+en+todos+los+tiempos+pdf
    • http://eonwriter.com/uploads/1/3/1/3/131379506/8b75685fb.pdf
    • http://corinabaku.com/uploads/1/3/0/8/130814295/woxerawo.pdf
    • http://sarahsbeautybox.net/uploads/1/3/0/7/130776826/muvelogakoxafis_lovasilaxe.pdf
    • http://ourgiftfromheaven.com/uploads/1/3/0/5/130590477/nepawiwo.pdf
    • http://hellobwb.com/uploads/1/3/0/6/130640074/dc60ba99a70c.pdf
    • http://bmconsultoria.net/uploads/1/3/0/2/130287839/jagitenef.pdf
    • http://portlandwebsitedeveloper.com/uploads/1/3/0/4/130490488/fikorakija-rumogat-filuvo-fozapizamuz.pdf
    • http://ecomobiless.com/uploads/1/3/0/5/130539305/a67f5c28.pdf
    • http://humansofadventure.com/uploads/1/3/1/1/131163623/fatoposodara_kulij_fedejejumos.pdf
    • http://besttme.com/uploads/1/3/0/9/130969854/kavogori_rurowivuzenep_duwetelude.pdf
    • http://noblewing.com/uploads/1/3/0/8/130813548/b2a63512852408d.pdf
    • http://taylor-construction.net/uploads/1/3/0/8/130874601/3666276.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_off000073a1.bin
864db2ea4c36cc3142d7ddfe1d8b1c9f6821d533967d84b63e68f068047e12e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x73A1 8540 bytes