Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7ad685f257f171f…

MALICIOUS

PDF

78.4 KB Created: 2020-04-05 15:21:06 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: abf4dd8db3296ea937f9007842ceab3c SHA-1: 576f83f2c3b0309b31e5803af9a9803d517b2251 SHA-256: d7ad685f257f171f8fbb39b2b811a1369b16c80f7a99348e076492931967e040
94 Risk Score

Malware Insights

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

The PDF contains a lure related to 'Pedro paramo plot summary' but is primarily a link farm, with numerous external links pointing to other PDFs on domains like alimamas.world and fdotlew.com. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the suspicious nature of the embedded links, suggesting a distribution or SEO manipulation scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://tradiepaymentplans.com/uploads/1/3/1/3/131398515/131398515.html#pedro+paramo+plot+summary
    • http://alimamas.world/uploads/1/3/0/6/130605493/b9f14.pdf
    • http://fdotlew.com/uploads/1/3/0/8/130814803/f37f1614a6f06.pdf
    • http://illegalgarageconversionsmadelegal.com/uploads/1/3/0/9/130969940/gugenalipiz.pdf
    • http://artisanvegane.net/uploads/1/3/0/5/130552055/f37a8.pdf
    • http://natureworks.kiwi/uploads/1/3/0/6/130639782/xodulidumi.pdf
    • http://thenerdfather.com/uploads/1/3/1/3/131384414/06ec419993c.pdf
    • http://geekygreengirl.com/uploads/1/3/0/3/130313400/mamuse-kapotafoxi.pdf
    • http://ajochinger.org/uploads/1/3/0/2/130287281/bewakur.pdf
    • http://tgfitnesstraining.com/uploads/1/3/0/9/130969090/27b58b02f084.pdf
    • http://interiordesignbyluxe.com/uploads/1/3/0/5/130589397/b547f.pdf
    • http://greenwolfcontainers.com/uploads/1/3/0/7/130775920/17b8c119db717.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_off00010da0.bin
93fd764b3f1744641298ab28e1c12e1a22673d45a44cf1071b74f118225ec0c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10DA0 8280 bytes

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