Malicious PDF — malware analysis report

Static analysis result for SHA-256 b737660e358bc57f…

MALICIOUS

PDF

43.7 KB Created: 2020-03-25 01:02:41 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3b27e1f4e5826cd94d5a6013e637c80b SHA-1: c1612d1ba38f0f5f41e4386e56fb3f48ee1c1c9e SHA-256: b737660e358bc57fdfd674b4ecd5142af0cdd8c8f1d66f2c50848bc2c252fe69
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links to various domains, a technique often used for SEO manipulation or to distribute further malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, indicating a likely attempt to drive traffic or host malicious files across a network of sites. No scripts were extracted from this sample, limiting the analysis of direct payload execution.

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://lwlegalservices.com/uploads/1/3/1/3/131380343/131380343.html#formulas+del+perimetro+y+area
    • http://noddfw.com/uploads/1/3/0/3/130323182/faxupuvez.pdf
    • http://www.hanlinsci.org/uploads/1/3/0/7/130739746/87721243943d.pdf
    • http://themorethanbasketball.com/uploads/1/3/0/4/130476172/ce5bf55d312382.pdf
    • http://christianwarnerphotoco.com/uploads/1/3/0/7/130738929/1a2cc7d2.pdf
    • http://gingermelon.ca/uploads/1/3/0/3/130379219/a1de1.pdf
    • http://33wontariost.com/uploads/1/3/0/5/130551449/7648b8b8dddc.pdf
    • http://seanmcanulty.com/uploads/1/3/0/3/130312986/8322899.pdf
    • http://ecperfect.com/uploads/1/3/0/4/130489467/pixowejepuxopamab.pdf
    • http://www.landlcandles.com/uploads/1/3/0/2/130270897/bisekerexipasozum.pdf
    • http://hostmaster.originfp.co.uk/uploads/1/3/0/6/130639032/bbed6.pdf
    • http://bearcreekpd.com/uploads/1/3/0/6/130621472/luropovujidaxuvaf.pdf
    • http://designingmoose.com/uploads/1/3/0/6/130605034/ba471.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006381.bin
7ad06548eca260df06ba822246cd28232e4b34f0d3e4781cbaf6f2cb4aa887c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6381 8044 bytes
font_01_sfnt_off00008100.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8100 2652 bytes
font_02_sfnt_off00008a69.bin
65ca2fa633a49bc637c245e3469a24bec82cbb291b9200d770c42ee2df1588ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A69 16096 bytes

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