Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ba3d198be49b793…

MALICIOUS

PDF

35.4 KB Created: 2020-04-09 06:33:28 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a24501a7a19ca4ac5d59dd0ffbe2394f SHA-1: 7078b467fc550259bffd8ec1061d769a1db78226 SHA-256: 4ba3d198be49b79381e3b4abce2efb68a280ed863369553aa05581e8c8564e58
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The document body contains text related to 'Juegos motrices para niños con autismo' and includes one of the identified URLs, suggesting a lure for SEO spam or potentially malicious content hosting. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://juliewiebecktherapy.com/uploads/1/3/1/3/131379546/131379546.html#juegos+motrices+para+ni%C3%B1os+con+autismo
    • http://sairusgrahamthille.com/uploads/1/3/0/5/130588206/siriridele_zegupeg.pdf
    • http://djournalebydn.com/uploads/1/3/0/2/130291922/lewepazumusite-wulalab-zotipuvu.pdf
    • http://balikbayanboxumacky.com/uploads/1/3/1/0/131069899/matil.pdf
    • http://womenhomi.com/uploads/1/3/0/2/130273617/6939057.pdf
    • http://ramirofunes.org/uploads/1/3/0/4/130435881/lividofugonodawif.pdf
    • http://greenmarketdfb.org/uploads/1/3/0/2/130287942/vosogopepaxuwava.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_off000060ca.bin
bb7d1482e12ce33b13d64afd3de2f7764bf52749718810f24cee840807901520		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60CA 8288 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.