Malicious PDF — malware analysis report

Static analysis result for SHA-256 fec2d3b10ff50a7c…

MALICIOUS

PDF

126.2 KB Created: 2020-07-09 17:40:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b90ba918213f5a31ed55da464e27dae SHA-1: 450803c23e0d45c578e912bab94736f9c1ce6720 SHA-256: fec2d3b10ff50a7c879dbdbca87b6a3c90f2bc1875b811dfb075740e27bd76ef
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/wb?keyword=thai%20herbal%20pharmacopoeia%202016%20pdf`. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, including `http://files.putinbayweddings.com/uploads/1/3/1/6/131607374/4798954.pdf`. The document body, though heavily obfuscated, contains text related to 'Thai herbal pharmacopoeia 2016 pdf' and the wkhtmltopdf application, suggesting a lure to disguise the malicious link.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://ttraff.cc/wb?keyword=thai%20herbal%20pharmacopoeia%202016%20pdf
    • http://files.putinbayweddings.com/uploads/1/3/1/6/131607374/4798954.pdf
    • http://files.niassestudios.com/uploads/1/3/0/8/130874318/b919e96e4ba.pdf
    • http://files.iyengaryogaojai.com/uploads/1/3/0/7/130738562/lenimaxigorosaseko.pdf
    • http://files.littleladyboutique.shop/uploads/1/3/2/3/132303060/mavada.pdf
    • http://files.basscoastpost.com/uploads/1/3/0/7/130775025/5831108.pdf
    • http://files.whitepeacockcoffee.com/uploads/1/3/1/4/131436971/7dad80.pdf
    • http://files.sgfbeef.com/uploads/1/3/0/8/130814066/tadukik.pdf
    • http://files.bayleighscloset.co/uploads/1/3/1/4/131437454/bediduw.pdf
    • https://polisixojo511032843.files.wordpress.com/2020/07/gomedupafidilawo.pdf
    • https://potavetuzeva.files.wordpress.com/2020/06/zunotixagapejekifab.pdf
    • https://lizuvedofo.files.wordpress.com/2020/07/zelatefiwizesovaz.pdf
    • https://fusikazisome.files.wordpress.com/2020/06/88121594052.pdf
    • https://jemuxotuwigi.files.wordpress.com/2020/06/78458284746.pdf
    • https://vepovuvub.files.wordpress.com/2020/07/tavutug.pdf
    • https://pozugupikuza.files.wordpress.com/2020/06/62833982370.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/salelixakibikiziz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69440205977.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jufozigazagapuji.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12035000993.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sakemiribukewud.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/futikuzazojexopuvenewipu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00017c95.bin
cd773a39eb24e3a092859c2f77ab281d8fed8e63a7a2aee0484943527243fa07		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x17C95 20988 bytes
font_00_sfnt_off00016a5b.bin
0f0f9f5ec1468b3c6314f08dd7c2e51a67bf408cf6a650a26c0fdfd7a53e2a48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16A5B 5388 bytes
font_02_sfnt_off0001b413.bin
8756fd29726f80ced3bb85cb4975ac59a9215432bd4402928054c183da5d58d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B413 16692 bytes

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