Malicious PDF — malware analysis report

Static analysis result for SHA-256 de317a30fbd878cf…

MALICIOUS

PDF

61.3 KB Created: 2020-07-10 20:25:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94992ca109b1f9a35516a0ac64d34335 SHA-1: 02817847b96de2a06a523cb0a1d61454922f83b6 SHA-256: de317a30fbd878cf52ca198df9d449be699342606a82376a51c67b34014460f5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains heuristics indicating it is a malicious redirector and part of a link farm, designed to host numerous external PDF links. The document body, though heavily obfuscated, contains a URL that is also flagged as a malicious redirector. This suggests the primary intent is to drive traffic to malicious sites, likely for further exploitation or phishing.

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=geneva%20convention%20pdf%201929
    • http://files.designsiteswithseo.com/uploads/1/3/1/4/131406607/1782384.pdf
    • http://files.surfergirlus.com/uploads/1/3/1/3/131398252/7e768005673e.pdf
    • http://files.lorraineparishwriter.com/uploads/1/3/0/8/130873870/lobojixo.pdf
    • http://files.zacplatforms.co.uk/uploads/1/3/1/4/131438819/kaluf.pdf
    • http://files.oceaniacarving.com/uploads/1/3/0/7/130738631/vatajipumibi-lurinevaluwazup-vafizexis.pdf
    • http://files.cninc.org/uploads/1/3/2/7/132740479/5324237.pdf
    • http://files.eastafricanscholarsfund.org/uploads/1/3/0/7/130776718/vemofuva.pdf
    • http://files.quietcreekherbfarm.org/uploads/1/3/2/6/132681316/3f800.pdf
    • http://files.sitesofpassage.org/uploads/1/3/1/0/131071240/455213.pdf
    • https://mowoguwexige.files.wordpress.com/2020/07/jinazesipo.pdf
    • https://kidubivo.files.wordpress.com/2020/06/18788761560.pdf
    • https://murivavuj.files.wordpress.com/2020/06/40871745952.pdf
    • https://cdn.shopify.com/s/files/1/0427/3831/9527/files/3135940541.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32732230761.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41326774972.pdf
    • https://cdn.shopify.com/s/files/1/0432/9160/7190/files/zelizu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tavolotifejenirogamofiv.pdf
    • https://cdn.shopify.com/s/files/1/0427/8275/2935/files/widagizupubuvop.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_off0000aee8.bin
2692bc006684086683b896be19a26eed8e29c079293c79c9ea4e8044f00e9c04		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAEE8 5060 bytes
font_01_sfnt_off0000c048.bin
ed9e4ed34cd8018bc4254e2389362f00fdb01a711f25f1d4324a9af427087370		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC048 12428 bytes

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