PDF malware analysis — malicious · c4360b32fd51fa4e

MALICIOUS

PDF

44.1 KB Created: 2020-08-05 13:14:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 42d5408489b87efba96129be5196c346 SHA-1: fcdf1b75f3075847ebb20d094da9eba60b616b44 SHA-256: c4360b32fd51fa4efd38f24d0f8386704042c1791c823bce400231c49f2992ed

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically `https://ttraff.cc/pify?keyword=search+pdfs+osx`. This indicates the document's primary purpose is to redirect the user to malicious infrastructure. The PDF also contains a large number of external links, characteristic of a link farm, further supporting the malicious intent. No scripts were extracted, and the document body was heavily obfuscated, but the presence of the malicious redirector is sufficient evidence.

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/pify?keyword=search+pdfs+osx
- http://files.northumberlandhispanic.ca/uploads/1/3/1/4/131407089/gavipad.pdf
- http://files.hushpuppypetmassage.com/uploads/1/3/0/8/130874314/ganakilafavixufusaf.pdf
- http://files.thepoeticevangelist.com/uploads/1/3/2/7/132740541/xeduxipewivuk.pdf
- http://files.sfepiphany.org/uploads/1/3/2/8/132815767/pakalugomasekipiti.pdf
- https://cdn.shopify.com/s/files/1/0433/0369/8600/files/pifebajedawozojoxodumosav.pdf
- https://cdn.shopify.com/s/files/1/0434/4145/5254/files/33470352805.pdf
- https://cdn.shopify.com/s/files/1/0428/5205/7244/files/21627805907.pdf
- https://cdn.shopify.com/s/files/1/0432/6975/0940/files/mufigabara.pdf
- https://cdn.shopify.com/s/files/1/0427/4854/3142/files/56664802070.pdf
- https://cdn.shopify.com/s/files/1/0434/7274/8709/files/wipuzisubizakepofudasib.pdf
- https://cdn.shopify.com/s/files/1/0434/0023/3112/files/dukajodalamonewinimuviz.pdf
- https://cdn.shopify.com/s/files/1/0439/3975/8235/files/rebuzi.pdf
- https://cdn.shopify.com/s/files/1/0434/0937/5383/files/16053089732.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pufabupenidobuxix.pdf
- https://cdn.shopify.com/s/files/1/0432/2266/3331/files/49477895397.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00006277.bin` `2355bf03a0d243d851a5302a04e5ef90cbd112309ed1982971ee816e165a8f3d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6277	4936 bytes
`font_01_sfnt_off00007348.bin` `2a1a8c0d50134b15a017e029997ac8a8ab0e4e3bf91954b10a19137bced387f6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7348	10116 bytes
`font_02_sfnt_off000095a2.bin` `d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x95A2	4324 bytes

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