Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c64a2666a41a168…

MALICIOUS

PDF

38.6 KB Created: 2020-04-07 03:43:57 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 67c42ae79c431691f07e61c525321ee6 SHA-1: 85277de85543fa776186e4be6854768d0c58e0c4 SHA-256: 3c64a2666a41a168ba5af3af1fbeaf9fbba922237b36ad43d57ac03a106244ec
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are hosted on unrelated domains and appear to be part of a link farm. The document body text, though obfuscated, contains a reference to 'Programa contabilidad domestica online' and the PDF was generated by wkhtmltopdf, suggesting a lure to a fake utility or service. No scripts were extracted from this sample.

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://pragueprivatetransfers.com/uploads/1/3/0/3/130323616/130323616.html#programa+contabilidad+domestica+online
    • http://freedomfamilyworshipcenter.com/uploads/1/3/0/3/130313213/papuzuf-suxulogara-wixuporafoxu.pdf
    • http://whothecloud.com/uploads/1/3/0/7/130739889/4220156.pdf
    • http://rightwayrepair.com/uploads/1/3/0/4/130475923/derujukopupow.pdf
    • http://icook4funplusmore.com/uploads/1/3/0/7/130739308/47723.pdf
    • http://transcendjazzquartet.com/uploads/1/3/0/6/130622101/3613403.pdf
    • http://buckeye54.com/uploads/1/3/1/3/131378930/xusijifikisurok-puvibifumi.pdf
    • http://cotoart.com/uploads/1/3/0/5/130550834/dagiva-boxivijixoju.pdf
    • http://ongiarafoundation.com/uploads/1/3/0/7/130738504/9639713.pdf
    • http://jogen.org/uploads/1/3/0/4/130477882/9934685.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_off00006b13.bin
4ba32a37c52c89e788d9191ad3fce7e60ae38f1f3745687fa809db6ce6a8e1b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B13 9088 bytes

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