Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc4f1b4bbb8ed0b7…

MALICIOUS

PDF

31.6 KB Created: 2020-04-07 20:12:01 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: e12b63db8a3c1ce1cb7ae676cdd53395 SHA-1: 9354c901dc46491923e76dd649c22a020ca2f3bc SHA-256: dc4f1b4bbb8ed0b7bb72ac5c87c0e71da664185e13c4f2ea351d9e6af147fe00
72 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. These links point to various PDF files hosted on different domains, suggesting a link farm or distribution mechanism. The document body contains text related to 'conduit bending pdf' and mentions the authoring application, but the primary malicious activity appears to be the mass distribution of external links.

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://sweetsensationswax.com/uploads/1/3/0/2/130289675/130289675.html#conduit+bending+pdf
    • http://2dom.us/uploads/1/3/0/5/130545199/9274ead100254b.pdf
    • http://4x4excursions.com/uploads/1/3/0/3/130313152/zalafifumevitofig.pdf
    • http://safeplacebedding.de/uploads/1/3/1/4/131408032/9ecfd.pdf
    • http://pestcontrolamarillo.net/uploads/1/3/1/4/131483197/4b2728ecbe6d.pdf
    • http://tombrettphotos.com/uploads/1/3/1/4/131437376/fuwagidoku_dafuf_juwekuzekekako_fukanezi.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_off000053eb.bin
e75ba84aa79581cac7eb24ed90d723c53731f80d33a0e2f7bc230d2e928ad40c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53EB 7720 bytes

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