Malicious PDF — malware analysis report

Static analysis result for SHA-256 da58550db7c2b456…

MALICIOUS

PDF

38.1 KB Created: 2020-03-29 05:37:38 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 41834125a6348da70c629440f08ef0ce SHA-1: c3853f6a52d41dc6f73f306d7d156509d43b50aa SHA-256: da58550db7c2b456a430225a78346d48377efc613c50d4611e2e14593b1dc659
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, a technique often used for SEO manipulation or to redirect users to malicious sites. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior. The embedded URLs point to various domains, suggesting a distributed infrastructure for hosting potentially harmful content. No scripts were extracted from this sample, limiting the ability to determine a specific payload.

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://74-123-72-211.mgwnet.com/uploads/1/3/0/6/130621746/130621746.html#diferencia+entre+oxido+metalico+y+no+metalico
    • http://tavormanagement.co/uploads/1/3/0/9/130969291/wifam.pdf
    • http://luke-jones.com/uploads/1/3/1/0/131069859/1463dcd06.pdf
    • http://thesituationshortfilm.com/uploads/1/3/0/2/130289632/vavezeg-vevuzizoxabow.pdf
    • http://strategicengine.com/uploads/1/3/0/5/130552073/pirisemomapunos.pdf
    • http://www.digitalpedia.ca/uploads/1/3/0/7/130739528/7aba457c8419.pdf
    • http://djbespoke.com/uploads/1/3/0/7/130740213/jamipokinapig-dowuwemowu.pdf
    • http://volunteerfocus.com/uploads/1/3/0/3/130379462/3712871.pdf
    • http://www.electjoedugan.org/uploads/1/3/0/5/130590592/6817462.pdf
    • http://beadedpowerbybetsy.com/uploads/1/3/0/8/130814611/kikev-kidalakodit-xudixafuropu-zubavolonin.pdf
    • http://puzzlescleaning.com/uploads/1/3/0/5/130543684/8933ca37.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_off00006442.bin
a2eac464922ba72c996eb3ceb48f43d50836683c2d7e62187cc990197259c334		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6442 11096 bytes

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