Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc78837fe4262a93…

MALICIOUS

PDF

37.1 KB Created: 2020-06-12 09:45:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c615edddf932bac439bef7695aae25a SHA-1: 91ce88177c50c1a3c842ecb747c9684f2f62426c SHA-256: fc78837fe4262a939aaaff2db19e0589b6093c0013f64931e6d4540c7104e848
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, many of which point to domains that appear to be part of a link farm. The heuristic 'PDF_SEO_LINK_FARM' indicates a deliberate attempt to create a network of SEO-optimized PDF links. The document body, though partially corrupted, contains references to 'Golf cart price guide' and the wkhtmltopdf application, suggesting a lure to potentially malicious or spam content hosted on these numerous external URLs.

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://christiancardsandphotos.org/uploads/1/3/0/9/130969501/130969501.html#golf+cart+price+guide
    • http://cpanel.jessiebeefit.com/uploads/1/3/0/6/130620710/db28fe.pdf
    • http://beyondstockllc.com/uploads/1/3/1/6/131607230/3981647.pdf
    • http://saskatoonabbeyfield.com/uploads/1/3/0/6/130639859/42868.pdf
    • http://webmail.reneebartolo.com/uploads/1/3/0/9/130970005/fuseguna-tagosugom.pdf
    • http://hostmaster.steilvol.be/uploads/1/3/1/4/131438676/69c35548bcab8.pdf
    • http://coloradodachtoberfest.com/uploads/1/3/0/2/130287738/fawigidima-xajokewiju-kogejekexa.pdf
    • http://bobang-music.com/uploads/1/3/1/3/131380347/453855.pdf
    • https://rilasam.files.wordpress.com/2020/06/85632926619.pdf
    • https://rawerif.files.wordpress.com/2020/06/68539793949.pdf
    • https://jumosor.files.wordpress.com/2020/06/75615660592.pdf
    • https://riburawonak.files.wordpress.com/2020/06/xupurukejezukugebizovepa.pdf
    • https://nevojepib.files.wordpress.com/2020/06/29185537068.pdf
    • https://ketowal.files.wordpress.com/2020/06/57182608604.pdf
    • https://kixametozi.files.wordpress.com/2020/06/56857301268.pdf
    • https://zinisarov424395058.files.wordpress.com/2020/06/mapotil.pdf
    • https://pebeposag.files.wordpress.com/2020/06/pafabirugajevaf.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_off000063a1.bin
7f4a3898c1af1f38f8c23da987f1c0926d8820bf95e520f700e6e92df10a0d7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63A1 10584 bytes

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