Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6de8c54351fddbb…

MALICIOUS

PDF

39.2 KB Created: 2020-03-29 10:18:27 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7857360f86f447b1f5c0607212984ada SHA-1: 2600a9163a453e58a087f49481fbc3eac35f048c SHA-256: b6de8c54351fddbbb9a55092d8c4e6880c97386809c76bd4ed87f4e37875042b
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique often used for SEO poisoning or to distribute further malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically indicates a mass of external PDF links. The embedded document body text, though partially corrupted, contains a URL that aligns with the observed link farm behavior. 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://adsl-63-204-18-59.benefitplans.org/uploads/1/3/1/4/131413837/131413837.html#carrier+infinity+72+thermal+cutout+in+high+stage
    • http://jakd4productions.com/uploads/1/3/0/5/130590548/35707ce2.pdf
    • http://www.nggardenadvice.co.uk/uploads/1/3/0/6/130621193/xidokimeta.pdf
    • http://www.redsquarecommercial.com/uploads/1/3/0/8/130874297/lelogijeloropi.pdf
    • http://statenislandweddingofficiant.com/uploads/1/3/0/6/130640111/mezekew.pdf
    • http://onlythedrops.com/uploads/1/3/0/5/130588334/2d455f984f0bd7.pdf
    • http://www.barnyardbunch4hclub.org/uploads/1/3/0/4/130476908/vepizod.pdf
    • http://bluespherelogistics.org/uploads/1/3/0/8/130874213/3517035.pdf
    • http://americanhazelnut.co/uploads/1/3/0/2/130273788/6073391.pdf
    • http://poubellepublishing.com/uploads/1/3/0/8/130813557/b4da1.pdf
    • http://creativewellnesssupport.com/uploads/1/3/0/5/130543154/9f4f2f44cc.pdf
    • http://www.blueywraith.com/uploads/1/3/0/6/130620233/9589752.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_off00006fb4.bin
2dd2db84f14e72c9e714c769d6fbc0d7cbed8631c46d0dda4dc45b94df4d91ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB4 7708 bytes

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