Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfc798fe839a6d53…

MALICIOUS

PDF

39.9 KB Created: 2020-06-18 19:31:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42586df86b2c1858a6e5098d37eac265 SHA-1: 40cf7c4e7a05db1254283f5ec779ed1607267df6 SHA-256: dfc798fe839a6d53db2cdbabd46f083048e17a34c80fe7f062d5336aa0705f6e
62 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a coordinated effort to manipulate search engine results or distribute content across multiple sites. The document body, though partially corrupted, contains text related to 'Breyer horse guide' and 'wkhtmltopdf', indicating a potential lure or disguise for the link farm activity. 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://northjerseyhousebuyers.net/uploads/1/3/1/6/131636988/131636988.html#breyer+horse+guide
    • http://samovardance.com/uploads/1/3/0/3/130313404/famufiba_jesidemi.pdf
    • http://cropfieldintl.com/uploads/1/3/0/5/130588508/fimuxigar.pdf
    • http://otayranchmusic.com/uploads/1/3/1/3/131380973/79b4cfef237.pdf
    • http://missbelle.co.nz/uploads/1/3/0/6/130639356/718b0f9.pdf
    • http://missbrunosclassroom.com/uploads/1/3/1/4/131407233/lugadigutabega.pdf
    • http://74-123-72-172.mgwnet.com/uploads/1/3/0/7/130776827/vetutiwuz.pdf
    • http://rockingmfsporthorses.com/uploads/1/3/1/3/131398252/zopazow_xigurevi.pdf
    • http://autismeonderzoek.be/uploads/1/3/0/5/130547552/rolija.pdf
    • http://katskornerinternational.org/uploads/1/3/1/4/131438202/razonegupel_boriz.pdf
    • http://kennewickconcreteking.com/uploads/1/3/0/6/130639428/wetufoguwexatanireju.pdf
    • http://sitepronto.pt/uploads/1/3/0/7/130739015/bomuliwegepenebowix.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fe5.bin
d04b361ae0248c9b6a64ad36d9fb7d5449aec37616e6ea78a16ecec8390812ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE5 4692 bytes
font_01_sfnt_off00006ff0.bin
fb31a0ff653c015be351f242bc50951db1c7c2b6a96d9680133659df5da4fe7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF0 10560 bytes

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