Malicious PDF — malware analysis report

Static analysis result for SHA-256 e089c861efeaa9c1…

MALICIOUS

PDF

35.0 KB Created: 2020-04-09 17:07:03 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b0ddac6b8db88d9bc7f6c1b3621faa78 SHA-1: 04a8c333ef4d91e4996b6757d057fbc736eeaa91 SHA-256: e089c861efeaa9c1fd7bcf94eab528dcd512b48eaaa28ac6fd512e625b7e3d67
70 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, many of which point to other PDF files on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The presence of a 'download button' heuristic further supports the idea that the document is designed to trick users into downloading or accessing malicious resources. No scripts were extracted, limiting the analysis of direct execution capabilities.

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://wehappyhair.com/uploads/1/3/1/4/131437487/131437487.html#kpmg+nunwood+customer+experience+excellence+report
    • http://ultimatedesigns.org/uploads/1/3/0/6/130604158/8272173.pdf
    • http://wwwstrengthforthejourney.com/uploads/1/3/1/3/131379608/c67ac23207200.pdf
    • http://2017broadwatercolorrun.com/uploads/1/3/0/2/130291491/f6ddb.pdf
    • http://tradetilingroup.com/uploads/1/3/0/3/130323818/vuxinokud.pdf
    • http://tambosuperfoods.xyz/uploads/1/3/0/8/130874381/9047768.pdf
    • http://china-autoaccessory.com/uploads/1/3/0/2/130271219/8825268.pdf
    • http://dawnforshawnee.com/uploads/1/3/0/5/130550956/9567408.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_off000060af.bin
36e5dad6b81389b58c5d9e8af469222c99c4b6a2f209a0ddfff911b1a0d24e9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60AF 7384 bytes

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