Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2a9315826a0207b…

MALICIOUS

PDF

49.3 KB Created: 2020-03-23 03:26:46 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 94516042c9dee9e5f446dd2e6faa45a2 SHA-1: 09641a5e8014fccd228f45a8011e7356f8cfb0ff SHA-256: a2a9315826a0207b6fcd0de493853dc893643773c6ef90f3734251ae242f6415
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, suggesting a link farm or redirection scheme. The document body, though partially corrupted, contains the text 'Estilo de negociacion americano' and references to wkhtmltopdf, indicating it was likely generated programmatically. The primary intent appears to be directing users to a multitude of external URLs, potentially for SEO manipulation or to host further malicious content.

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://articsl.com/uploads/1/3/0/7/130739127/130739127.html#estilo+de+negociacion+americano
    • http://broadwateradvertising.com/uploads/1/3/0/4/130488669/nakigux.pdf
    • http://ccrewdogs.com/uploads/1/3/0/5/130543025/526053.pdf
    • http://tylerjlewis.co.uk/uploads/1/3/0/5/130551057/4136220.pdf
    • http://mygreekhouse.net/uploads/1/3/0/7/130739693/8509147.pdf
    • http://www.louisvillefuneralservice.com/uploads/1/3/0/6/130621664/930115.pdf
    • http://realedchat.com/uploads/1/3/0/6/130604086/zagopozefewevup.pdf
    • http://family-love.daniellerosephotography.com/uploads/1/3/0/4/130476427/pimexotemat-rimivogurufu.pdf
    • http://sugarmaplecharcoal.com/uploads/1/3/0/7/130775446/af5e02216b69db.pdf
    • http://anthroup.com/uploads/1/3/0/2/130270747/cedb144d0c.pdf
    • http://jingcaizuqiutouzhu.f18.ebkf.org/uploads/1/3/0/6/130605283/715644.pdf
    • http://dalebrook.co.nz/uploads/1/3/0/2/130288986/nemexadejag_pipodezikun.pdf
    • http://btyempireplus.com/uploads/1/3/0/8/130814058/1991905.pdf
    • http://stuartskenephotography.co.za/uploads/1/3/0/7/130776002/gusumajo_jugaz_vomujagurofa.pdf
    • http://worldmaco.com/uploads/1/3/0/7/130740130/0f23dba23d.pdf
    • http://mmtaxandfinancial.com/uploads/1/3/0/6/130604508/tiporume-roluluvavi.pdf
    • http://diasporawearuk.co.uk/uploads/1/3/0/5/130544539/mefurijuladitad.pdf
    • http://nateberggren.com/uploads/1/3/0/6/130639082/1826558.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_off00009859.bin
5d9df58f0807cc0edf8d65780de408d1c1bd0372ad27a6c7616b658c167d4014		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9859 8788 bytes

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