Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5f63661e0a33255…

MALICIOUS

PDF

39.0 KB Created: 2020-04-02 10:50:14 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7b96d1e5104eac3fba4c028028217176 SHA-1: aff1145c91e017076f71a9635fe83c77e9af76db SHA-256: c5f63661e0a3325576b54fb26baf733f6183b1a955bce203cacb4900e58fb840
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or distribution network. The document body contains garbled text and some of the extracted URLs, reinforcing the idea that the primary purpose is to redirect users to other content. 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://djsacademy.com/uploads/1/3/0/6/130620464/130620464.html#principio+de+irrelevancia+del+orden+actividades
    • http://mountainspiritshamanism.com/uploads/1/3/0/3/130379143/4f603b33956d.pdf
    • http://blubloggs.com/uploads/1/3/0/7/130776027/ganifexave_xavawokitulaji_puzejoraboxakid_todux.pdf
    • http://willferman.com/uploads/1/3/1/0/131070220/dudaxonijosajiwapa.pdf
    • http://homecyberprotect.com/uploads/1/3/0/8/130814338/bemofowod_guvikup_kaxiribakit.pdf
    • http://wcpauthor.us/uploads/1/3/0/3/130313345/dimugan.pdf
    • http://michiganhomebuyingcenter.com/uploads/1/3/0/8/130813588/zafebibuw.pdf
    • http://rainsrealestateservices.com/uploads/1/3/0/5/130550794/bc36414166df.pdf
    • http://msaswag.com/uploads/1/3/1/3/131381411/diramolimosapapilif.pdf
    • http://hawaiiweddingrental.com/uploads/1/3/0/3/130313363/rivudasozufikib.pdf
    • http://115baldwinstreet.com/uploads/1/3/0/6/130604445/e8ba9b05632a.pdf
    • http://www.ourserenityhouse.net/uploads/1/3/0/4/130477026/nurolerurom.pdf
    • http://jfmaloneylaw.com/uploads/1/3/1/1/131164034/denafubujowizaz.pdf
    • http://clgconsulting.xyz/uploads/1/3/1/4/131453119/9144667.pdf
    • http://winchesterartmurals.com/uploads/1/3/0/4/130476248/8c09e4e.pdf
    • http://creatingjoy.net/uploads/1/3/0/4/130436482/6620008.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_off00006ccc.bin
199f06bb7c5d3f302c75be6dc80a6ce0f23511d36e3e7615147f5d42e90e9d48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CCC 8832 bytes

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