Malicious PDF — malware analysis report

Static analysis result for SHA-256 421baeb5657d5aac…

MALICIOUS

PDF

41.8 KB Created: 2020-04-10 04:11:02 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 49338c330be4ad7a0ea3593cd4cd944e SHA-1: 15b03e251a7cc2e97a8b51d8a5b03d8fdc59b54d SHA-256: 421baeb5657d5aace7f2768834f4683f1fd60bef29d2e12f130f956a1db6b3d2
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 pointing to various domains, suggesting a link farm or SEO poisoning attack. The document body contains a title related to PowerPoint, which may be a lure. No scripts were extracted from this sample, limiting the ability to determine further payload delivery or execution mechanisms. The primary attack pattern observed is the distribution of numerous external links.

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://heturecycle.se/uploads/1/3/0/7/130738705/130738705.html#como+hacer+un+esquema+en+power+point+2016
    • http://airstreamflyingcloud19cb.net/uploads/1/3/0/8/130873709/jipuledolobogo.pdf
    • http://graysraw.com/uploads/1/3/0/4/130490410/9323454.pdf
    • http://aglcap.com/uploads/1/3/0/6/130604152/3add1b66bb0b.pdf
    • http://montbrae.com/uploads/1/3/0/5/130588928/bd72ba.pdf
    • http://timberframing.ca/uploads/1/3/0/5/130589216/junilarunitebafuk.pdf
    • http://blogpuntacana.com/uploads/1/3/0/3/130324063/b1c59574c0a9.pdf
    • http://apiarium.eu/uploads/1/3/0/4/130477455/ketetexati-derokovalupid-zigubem.pdf
    • http://ttves.com/uploads/1/3/0/4/130488295/gulerudeni-zipajexukufi-miwakad.pdf
    • http://theag3ncy.com/uploads/1/3/0/6/130605405/vebezidipeme.pdf
    • http://arborlearning.org/uploads/1/3/0/5/130551143/56c6e72e2.pdf
    • http://sixcreekscoaching.com/uploads/1/3/0/6/130620715/7173166.pdf
    • http://alliedhealthcaremanagement.com/uploads/1/3/0/7/130775365/morilakivakesixafe.pdf
    • http://aquaponos.shop/uploads/1/3/0/8/130814295/pediginokodab_vebidadabudek_nezux_kiruv.pdf
    • http://mariejoseehull.com/uploads/1/3/0/6/130639971/8e5ed7353.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_off00007a5c.bin
f47e5e5636c3c5e4be7009096341d0a382706c6a8355faf491fac76cbe58c5df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A5C 8648 bytes

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