Malicious PDF — malware analysis report

Static analysis result for SHA-256 456a4933999e838d…

MALICIOUS

PDF

42.7 KB Created: 2020-07-09 13:05:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40e1833f660b896e573678e9ffe6a1d5 SHA-1: d703deddb6a1cdf7d15ebc690ec398d7dbd39ba9 SHA-256: 456a4933999e838d3ed2ad5099239ff491dfd210bddcee3930abc0470dbf37af
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to suspicious domains and are likely part of a link farm. One critical heuristic identified a link to a known malicious redirector infrastructure. The document body text and embedded links suggest a lure related to 'clearance certificates' to entice users to click on these malicious URLs.

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.com/wb?keyword=frcgw%20clearance%20certificate%20pdf
    • http://files.in2improv.org/uploads/1/3/0/9/130969910/kojuwodela.pdf
    • http://files.aminzargar.com/uploads/1/3/1/8/131872096/5236290.pdf
    • http://files.smoothtransitionservices.com/uploads/1/3/1/8/131871829/e067dc4fe21f6.pdf
    • http://files.ronnieroseband.com/uploads/1/3/0/8/130813797/a7f99.pdf
    • http://files.cuestacollegerodeo.com/uploads/1/3/1/3/131383621/zeweruvodunewekeribe.pdf
    • http://files.familiesforeverministries.com/uploads/1/3/1/4/131453934/f57936.pdf
    • http://files.melaningracecosmetics.com/uploads/1/3/0/8/130874035/3de57b.pdf
    • http://files.airdriekarate.net/uploads/1/3/1/4/131407263/6f389.pdf
    • http://files.thirdcinemaproductions.com/uploads/1/3/1/3/131379749/sonazez.pdf
    • https://xoboxiruva.files.wordpress.com/2020/07/vosodebujewarimuvut.pdf
    • https://xizipif.files.wordpress.com/2020/06/sisokilodij.pdf
    • https://rukobiva.files.wordpress.com/2020/07/14545526426.pdf
    • https://zezumova.files.wordpress.com/2020/06/12056521876.pdf
    • https://belonuwulaj.files.wordpress.com/2020/07/63163082127.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17810153535.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jepomosojavadoji.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/5561128363.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/83583068491.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_off0000686d.bin
08c74168dc842e1f2f329cd246aeb4fa729bfedf0e66010f8805ef6b38832058		 pdf-font-stream PDF embedded font (sfnt) at offset 0x686D 4872 bytes
font_01_sfnt_off00007913.bin
f87fc1f4888e72784b20ddfd9e5a19ddae4ca24d12d06f4b835d726965098728		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7913 10716 bytes

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