Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a20f7e6623ed18a…

MALICIOUS

PDF

38.4 KB Created: 2020-03-21 21:43:50 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 88f11bee78a7da6777c3eaa2b32b2369 SHA-1: 570a51ce1f23ce6a6fef2a2e33b2dd93a77f3f32 SHA-256: 4a20f7e6623ed18a23869c9cf66939766da431c373e59a7abdf392e9535608a9
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, 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 URLs, further supporting the link farm hypothesis. 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://zambiasafarihunting.com/uploads/1/3/0/6/130605196/130605196.html#moldeo+en+arena+verde+partes
    • http://golfbravobravo.com/uploads/1/3/0/4/130483825/2240293.pdf
    • http://highhopesnetwork.net/uploads/1/3/0/7/130739232/sapilalafet.pdf
    • http://soccerlegion.com/uploads/1/3/0/2/130272333/tagedasapajo-wevaxaxexo-rerufineta-rajolurevemurok.pdf
    • http://www.mary-work.com/uploads/1/3/0/6/130603676/kumemazeliwurozax.pdf
    • http://traffics.site/uploads/1/3/0/4/130483216/kuzus_pever_xevaxexaxe.pdf
    • http://ardidacomopimenta.com.br/uploads/1/3/0/9/130969399/nefusuwaw.pdf
    • http://www.clinicadanielasalgado.com.br/uploads/1/3/0/4/130476469/jowurum.pdf
    • http://hostmaster.lightmatter.media/uploads/1/3/0/2/130271154/5803974.pdf
    • http://tweekys.com/uploads/1/3/0/5/130588907/garawoti-dekogifewoze-duzelu.pdf
    • http://baldguymusic.net/uploads/1/3/0/5/130588893/vusubadot.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_off00006c65.bin
0458a5f7434393d769515423e2807e3a84c3b5ffa1def7ad94d14f5ab3d8bafa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C65 8480 bytes

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