Malicious PDF — malware analysis report

Static analysis result for SHA-256 a648e670f1cd3753…

MALICIOUS

PDF

33.1 KB Created: 2020-05-31 06:02:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3342b60067a19b4d820cf0c4696f15ff SHA-1: 346ff2cb809495580776e522521bd0b3a0c587bf SHA-256: a648e670f1cd37531bf950d89aaea082706732f4dced1ba6045b22ace60c2f0c
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 are structured as numeric slugs and point to PDF files, indicative of a link farm for SEO manipulation. One of these links, 'http://evchargersinbath.co.uk/uploads/1/3/0/5/130539584/130539584.html#how+to+download+pokemon+gba', suggests a lure to download content. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic further supports the idea that the document is designed to trick the user into clicking a download link.

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://evchargersinbath.co.uk/uploads/1/3/0/5/130539584/130539584.html#how+to+download+pokemon+gba
    • http://opscollc.com/uploads/1/3/0/5/130588678/valuxukuwus.pdf
    • http://rupamhomes.ca/uploads/1/3/0/9/130969357/3497669.pdf
    • http://lovelizex.com/uploads/1/3/0/8/130814193/5820059.pdf
    • http://jmhfriendraisng.com/uploads/1/3/0/4/130435753/9073543.pdf
    • http://angelgames.co/uploads/1/3/0/7/130739772/sufewexetus_dolij_vewimipubeno.pdf
    • http://onepointlifebuilding.com/uploads/1/3/1/3/131380504/7857286.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_off00005647.bin
5d7ec5ac056cab740211d49adb612e47cb4ecbcdfc81f0fd304a4d5230b7a726		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5647 10552 bytes

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