Malicious PDF — malware analysis report

Static analysis result for SHA-256 539fc60302f66d88…

MALICIOUS

PDF

42.2 KB Created: 2020-03-28 06:05:21 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 40fb1970d03384ce8819d681a2f93e2c SHA-1: acc87fe81cecb6dff540afe8473c809ace529768 SHA-256: 539fc60302f66d8813741392d9b0a1ceda565020ddef2699f744229b2625f242
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDF files hosted on similar domains. The document body, though partially corrupted, contains a URL that appears to be a lure for educational content. This suggests a link farm or SEO poisoning tactic to drive traffic to potentially malicious sites. 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://masonleigh.com/uploads/1/3/1/3/131380717/131380717.html#10+ejemplos+de+lenguaje+com%C3%BAn+a+lenguaje+algebraico
    • http://worldoftrading.net/uploads/1/3/0/5/130545249/dusomugolonobam-gojegidebebefep.pdf
    • http://confusionvegezgourmet.com/uploads/1/3/0/2/130272472/5331306.pdf
    • http://www.later-life-living.com/uploads/1/3/0/8/130813428/1613892.pdf
    • http://webmail.aliamphoto.com/uploads/1/3/0/5/130539637/bc1409b3d.pdf
    • http://webdisk.grewbuilding.com/uploads/1/3/0/5/130589431/xubomo.pdf
    • http://modtone.net/uploads/1/3/0/2/130289347/b3b8153400dd4.pdf
    • http://bianxingjingangzhenren.br3h.com/uploads/1/3/0/4/130436172/foxekiwato.pdf
    • http://radiowave1.com/uploads/1/3/0/7/130775658/52a2ce7046580.pdf
    • http://www.pauldsolovay.com/uploads/1/3/0/2/130272571/vejivenid.pdf
    • http://healthhacks.blog/uploads/1/3/1/3/131379397/f433b40.pdf
    • http://mitsubishisplitac.com/uploads/1/3/0/5/130551692/612a44c1354e0.pdf
    • http://ipaintdfw.com/uploads/1/3/0/5/130550697/zamaf.pdf
    • http://tassin-inspired-designs.com/uploads/1/3/0/2/130270904/46531.pdf
    • http://safecleanasc.com/uploads/1/3/0/7/130775959/ripuxewotu_rokejubum.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_off0000745c.bin
992953f24786e889f13ba06a2664acddf96f9688a10e2f74a2d98f551357a305		 pdf-font-stream PDF embedded font (sfnt) at offset 0x745C 10108 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.