Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c2bb6df0cea1942…

MALICIOUS

PDF

38.3 KB Created: 2020-04-04 15:55:02 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 56991648b50a81c484c44ead8196da3e SHA-1: 3531451ca14aab3af27ab462c2970cc16a56bf2f SHA-256: 4c2bb6df0cea19422f420788ace85364b9d3cf72ab04d337b86e1bdc83ce92d6
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links to other PDF files hosted on various domains. This pattern is indicative of a link farm or a distribution mechanism for further malicious content. The embedded document body text, though corrupted, contains references to the URLs, reinforcing the link-based attack. No scripts were extracted, limiting the analysis of direct payload execution.

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://jessicalgervaisbooks.com/uploads/1/3/0/5/130589194/130589194.html#mapa+conceptual+de+calor+y+temperatura+fisica
    • http://casalunacreative.com/uploads/1/3/0/3/130323417/4567330.pdf
    • http://womenschangecoach.com/uploads/1/3/0/2/130287472/c326e238.pdf
    • http://115baldwinstreet.com/uploads/1/3/0/7/130739876/pifirakenunuduxet.pdf
    • http://jemniandco.com/uploads/1/3/1/4/131406813/389300.pdf
    • http://fotografiabodasvigo.es/uploads/1/3/1/0/131070394/14bcf602.pdf
    • http://melaninvancouver.com/uploads/1/3/0/5/130589008/lixibonekamuzidan.pdf
    • http://coeuretcorpsmassage.fr/uploads/1/3/0/8/130874126/1627795.pdf
    • http://wisemoment.net/uploads/1/3/0/6/130639268/3bb4cd5e28e6.pdf
    • http://jllawncare.net/uploads/1/3/0/3/130380002/5339287.pdf
    • http://saboreslatinosusa.com/uploads/1/3/0/6/130640104/e9afc.pdf
    • http://homcceremonial.com/uploads/1/3/0/9/130969445/tagonokesulikal_folafema_gedenarapos_wituzivope.pdf
    • http://sikhcouncilbirmingham.org/uploads/1/3/0/6/130640088/cce6be772f46.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_off000069af.bin
90bce35a53631979fdd99db7307c88d286f80c56b11a1da3debf9d3edddf6c4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69AF 9084 bytes

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