Malicious PDF — malware analysis report

Static analysis result for SHA-256 c267e13f8e181d7a…

MALICIOUS

PDF

35.4 KB Created: 2020-04-24 10:17:46 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4112d5106ce77e66568deaf7124c7689 SHA-1: 78ac17719f8f8a5844a7f756b5011dc60bad2cfe SHA-256: c267e13f8e181d7a40ef0e897170594f3e2f9cbd93ef3a46c7f68b16fafd56de
70 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. These links are likely part of a link farm designed to attract users with search engine optimization tactics. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic further suggests a lure to download content. The primary intent appears to be redirecting users to potentially malicious websites or to download further malware.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://blakebuilds.us/uploads/1/3/0/8/130873875/130873875.html#tn+hd+movies+tamil+free
    • http://calijyl.com/uploads/1/3/1/3/131398250/9983336.pdf
    • http://konkursalesztuka.pl/uploads/1/3/1/6/131637219/dibimarojid.pdf
    • http://theoneontaroom.com/uploads/1/3/1/6/131606203/jivomud.pdf
    • http://hardinstation.com/uploads/1/3/1/3/131378817/cc9c1f78e7163.pdf
    • http://cultofcardboard.com/uploads/1/3/1/3/131380601/8072880.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000593e.bin
983b2b3d7c2c33200ae81fcb99970f2e672099a4a1c99a263596e10a09fa11cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x593E 7832 bytes
font_01_sfnt_off000077e2.bin
54d41b2098d5b730dfe5cae5f637595b5c28c0fa6f902d2b9b0a03fac37f34be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77E2 2848 bytes

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