Malicious PDF — malware analysis report

Static analysis result for SHA-256 29a0adf1657dc581…

MALICIOUS

PDF

35.8 KB Created: 2020-06-22 05:42:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 668ba88035d215863ad4e23991c250a1 SHA-1: 3c0e868b9e7dab849b4d7bf922d83581b0474a07 SHA-256: 29a0adf1657dc58189edf7f69012fe47e3fe7fe70fe6d2e9ec5e4bbed2d3c36a
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 numerically or generically slugged, indicating a link farm or SEO poisoning tactic. The document body mentions 'Pdf reader samsung tablet' and includes a URL that appears to be a lure for such a reader. The primary intent seems to be directing users to potentially malicious websites through these links.

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://sykehusutstyr.no/uploads/1/3/2/6/132681192/132681192.html#pdf+reader+samsung+tablet
    • http://alonsoaguirre.com/uploads/1/3/0/4/130488604/wazapepaxa.pdf
    • http://inspec-electrical-contractors.co.uk/uploads/1/3/0/7/130738628/1227707.pdf
    • http://pacificpropertycapital.com/uploads/1/3/0/5/130545199/20d76b0991d4d59.pdf
    • http://pajetdesablemobile.com/uploads/1/3/1/3/131378838/supugajukidirafotojo.pdf
    • http://makenziepaulk.com/uploads/1/3/0/4/130476917/db049a49afabb.pdf
    • http://em-bou-yes.com/uploads/1/3/0/5/130550693/dd4b7b07.pdf
    • http://davisgreenenterprises.com/uploads/1/3/0/6/130639835/b2c7e62bcc920e.pdf
    • http://kingsbs01.kingsroofing.net/uploads/1/3/1/0/131071114/6074110.pdf
    • http://sabahraphaelreed.com/uploads/1/3/0/8/130874108/lumodifunisaxaxoxafi.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ef4.bin
fc97b636f6c0ce191aff2cab3ec8c3aec92eb657e767a47b225ec2a28ce64055		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EF4 5092 bytes
font_01_sfnt_off0000601b.bin
a97b8c58c0940af03c41be4964ee2054c1f780f5a292335ff7b2a9c268925117		 pdf-font-stream PDF embedded font (sfnt) at offset 0x601B 10288 bytes

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