Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6185efc71018895…

MALICIOUS

PDF

39.8 KB Created: 2020-03-09 13:37:56 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 717775676ea7bc15b0d9428f30235f9e SHA-1: f4c53b45fb15e72d590277cf6af7255f7de31c75 SHA-256: a6185efc71018895eed7a9a5f32abb355e7c3107e9454bede5a82df971d9e1c0
70 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to other PDFs, suggesting a link farm designed to distribute malicious content. One of the embedded links, 'http://suhki-portraits.rominastiebenphotography.com/uploads/1/3/0/2/130270897/130270897.html#dell+command+update+2.4+uninstall', appears to be a lure for a fake software update. The presence of a visual download button further supports this phishing or social engineering attack vector.

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://suhki-portraits.rominastiebenphotography.com/uploads/1/3/0/2/130270897/130270897.html#dell+command+update+2.4+uninstall
    • http://legioblades.com/uploads/1/3/0/6/130604791/3a5e26f0.pdf
    • http://jordynreedmft.com/uploads/1/3/0/5/130590438/sisokawiza.pdf
    • http://www.cannabellacanada.com/uploads/1/3/0/5/130589269/4732e00b209d328.pdf
    • http://elizagullydesign.com.au/uploads/1/3/0/6/130639557/c57755010153ea.pdf
    • http://barringtonhillweddings.com/uploads/1/3/0/4/130476185/72a5326b5bad06.pdf
    • http://createdbyrellyrel.com/uploads/1/3/0/5/130589229/15c2ed7929436.pdf
    • http://mail.samanthazweben.com/uploads/1/3/0/7/130739457/2817010.pdf
    • http://monthlytights.net/uploads/1/3/0/4/130484005/kirigigalenusarad.pdf
    • http://3828riverroadbricknj.com/uploads/1/3/0/6/130640051/2234473.pdf
    • http://www.jbmyersphotography.org/uploads/1/3/0/5/130543941/5061758.pdf
    • http://demotivational-posters.com/uploads/1/3/0/3/130313024/1924395.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_off0000739f.bin
bd1bf758169e13d8c14d53576748410ea5b5c7f7f5ae4b479c030716d4d80f64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x739F 7844 bytes

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