PDF malware analysis — malicious · a4f091646c7f0695

MALICIOUS

PDF

46.7 KB Created: 2020-07-31 13:46:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 43a40a3834caf8560068eb9229c3891b SHA-1: b64708e3fd7a9264b6234b44bed6fb222f4e1c37 SHA-256: a4f091646c7f069543902dfe4066e26c65f94d2675a5ee2f4f0a0e3c446044c6

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious infrastructure at 'ttraff.ru'. The document body, though heavily obfuscated, contains keywords related to 'digital signature' and 'foxit', suggesting a lure to trick users into clicking malicious links. The presence of a malicious redirector link indicates an attempt to lead the user to a site that likely hosts further malicious content or phishing pages.

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.ru/pify?keyword=assinatura+digital+pdf+foxit
- http://files.personalhibachichef.com/uploads/1/3/1/8/131872298/aab0c5cebb17b.pdf
- http://files.dcdsign.com/uploads/1/3/1/3/131379820/mufaruvosamixetob.pdf
- http://files.lcdigitalconnect.com/uploads/1/3/1/0/131071252/dapawozijigawe.pdf
- http://files.lutzka.com/uploads/1/3/1/0/131069781/bidit-xemojegatopufir-defifexe.pdf
- http://files.dcdsign.com/uploads/1/3/1/3/13137982
- https://cdn.shopify.com/s/files/1/0427/6443/5612/files/fewenukirixus.pdf
- https://cdn.shopify.com/s/files/1/0440/7685/9557/files/zavofiwimuduxawikeluzajov.pdf
- https://cdn.shopify.com/s/files/1/0437/9875/7538/files/ziporivujurozigabovizabul.pdf
- https://cdn.shopify.com/s/files/1/0440/5932/8662/files/95737428936.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92904811518.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tovunegorudakumuwi.pdf
- https://cdn.shopify.com/s/files/1/0432/2174/5822/files/70578303513.pdf
- https://cdn.shopify.com/s/files/1/0440/3462/1590/files/supezuwokinob.pdf
- https://cdn.shopify.com/s/files/1/0441/4016/7320/files/jovejololarireb.pdf
- https://cdn.shopify.com/s/files/1/0429/6278/0311/files/36406254170.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56346524494.pdf
- https://cdn.shopify.com/s/files/1/0434/5593/8725/files/54562348226.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000782f.bin` `28c20e5e7271026f22072d94062cdbc00330f5d4526aef1931dea5b4c833bd45`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x782F	5028 bytes
`font_01_sfnt_off00008948.bin` `0792c07fe282f4f65a9484a99f5466498d45db626e132341f1fedc8adfff2a07`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8948	10612 bytes

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