Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5541b1f9a2a681e…

MALICIOUS

PDF

37.7 KB Created: 2020-06-13 08:38:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 952368dd0ad6a0bc8aa197132d2146fb SHA-1: aa7091ef4a010031781ccd6d035f798e87749231 SHA-256: d5541b1f9a2a681e8bd4172d7091f484c05d65d84810b1c186661ae0d5b6265e
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, pointing to various domains. The document body also contains a URL that appears to be part of this link farm. This suggests a coordinated effort to distribute content or manipulate search engine results. The primary purpose appears to be directing users to a network of potentially malicious or deceptive PDF files.

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://1mwl.brdge.org/uploads/1/3/0/7/130739366/130739366.html#s%25C3%25A9quence+fran%25C3%25A7ais+cap+s%2527ins%25C3%25A9rer+dans+le+groupe
    • http://actorheadshotphoto.com/uploads/1/3/0/2/130289625/kexesuli_getexidu.pdf
    • http://optionlabs.xyz/uploads/1/3/1/6/131606420/bd0dff66a69ec.pdf
    • http://server65225.misscarols.com/uploads/1/3/1/0/131071145/8934275.pdf
    • http://scaleupentrepreneur.com/uploads/1/3/0/2/130287930/0d682.pdf
    • http://tidalindustries.com/uploads/1/3/0/6/130620410/vureporekar_xurame_pegibinajaxuleb_pasuxujomuxi.pdf
    • https://pofuwake.files.wordpress.com/2020/06/tilubag.pdf
    • https://govofakod.files.wordpress.com/2020/06/88932776221.pdf
    • https://zimorujiwek.files.wordpress.com/2020/06/duwevino.pdf
    • https://kuzelelete.files.wordpress.com/2020/06/23370122279.pdf
    • https://wujixose.files.wordpress.com/2020/06/gozalinaremizamenebusef.pdf
    • https://zezumova.files.wordpress.com/2020/06/voxeg.pdf
    • https://walumuvov.files.wordpress.com/2020/06/zariwaluvuwibiwubum.pdf
    • https://sezorez.files.wordpress.com/2020/06/99459224710.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_off000061c2.bin
03a4b84abeec43461f69d115e53a028e4486fd81ef5f2aec97cbca3e8879b886		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61C2 12260 bytes

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