Malicious PDF — malware analysis report

Static analysis result for SHA-256 c21bcc12a8613c1f…

MALICIOUS

PDF

39.5 KB Created: 2020-04-10 04:04:19 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 647b316e87bda6fd7ecb1a6c3ebc2c34 SHA-1: 9a5048f0f848e2ecbe0ae0529c3a89c574f9a810 SHA-256: c21bcc12a8613c1f8bbfe251e1dd89e57d84381a6a0537da94423734e15f8367
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are structured to appear as downloadable PDF files. The document body explicitly mentions downloading 'office 2013 trial version free', indicating a social engineering lure. The primary URL, http://yogamitkate.space/uploads/1/3/0/5/130588980/130588980.html#download+office+2013+trial+version+free, directly supports this lure. The heuristic PDF_SEO_LINK_FARM suggests this PDF is part of a link farm designed to attract traffic, likely for malicious purposes.

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://yogamitkate.space/uploads/1/3/0/5/130588980/130588980.html#download+office+2013+trial+version+free
    • http://artfullday.com/uploads/1/3/0/9/130969175/penagogewawuri_linitenu.pdf
    • http://boaglaw.com/uploads/1/3/1/4/131409693/rawejepizugilodu.pdf
    • http://xenoadoptshop.com/uploads/1/3/1/4/131437464/974a51.pdf
    • http://maddelleinegrae.com/uploads/1/3/0/3/130313253/1091933.pdf
    • http://ceecentre.org/uploads/1/3/1/3/131381761/a8d09a4dc04ef58.pdf
    • http://altitudenursingservices.com/uploads/1/3/0/4/130483761/85959de3b9d5.pdf
    • http://sasquatchdiscs.com/uploads/1/3/0/6/130604757/kokezine.pdf
    • http://unionflatrock.org/uploads/1/3/0/7/130776888/miwexume.pdf
    • http://catherinemarchportfolio.com/uploads/1/3/0/4/130489727/gulifamiso-xebagozokiwuv-gitazajuleladuj-jerowo.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_off00005b66.bin
eafd1fb44b053400b3b43f75c7647cb950599c7a1b9a9622c451903c78857521		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B66 7908 bytes
font_01_sfnt_off00007a46.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A46 16036 bytes

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