PDF malware analysis — malicious · 2e71afc4473febbf

MALICIOUS

PDF

44.9 KB Created: 2020-07-28 14:05:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 8c6f42eeff7438e1fa0dfce656b1c0cf SHA-1: 9b7772cec36b2dcd36fbef5406d1eb5f3ca5cfe3 SHA-256: 2e71afc4473febbfca5f5e6b8ff5199db65bf35b071536f898b546cf264978ef

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the link `https://ttraff.com/pify?keyword=operatoria+dental+barrancos+4+edicion+pdf` points to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic suggests a large number of external PDF links, with `https://cdn.shopify.com/s/files/1/0432/4442/1282/files/93938835533.pdf` being the first identified. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used for creating PDF documents from web content, which aligns with the presence of numerous external links.

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/pify?keyword=operatoria+dental+barrancos+4+edicion+pdf
- http://files.ianwhittaker.com/uploads/1/3/1/3/131383924/supigovamesug_nazonapofuvuraf_boloni.pdf
- http://files.sacstatecki.org/uploads/1/3/1/4/131407226/2889764.pdf
- http://files.halcyonimages.com.au/uploads/1/3/1/4/131453421/3572532.pdf
- http://files.ybcakesandmore.com/uploads/1/3/0/8/130873906/4871236.pdf
- http://files.halcyonimages.com.au/upl
- https://cdn.shopify.com/s/files/1/0432/4442/1282/files/93938835533.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gomejalubewetilukifij.pdf
- https://cdn.shopify.com/s/files/1/0430/5013/9801/files/25117179181.pdf
- https://cdn.shopify.com/s/files/1/0432/9072/2469/files/luxutisifudelafimokeruduf.pdf
- https://cdn.shopify.com/s/files/1/0428/0533/0083/files/gubusitiketonikip.pdf
- https://cdn.shopify.com/s/files/1/0427/4136/6951/files/kulupunemiwikiv.pdf
- https://cdn.shopify.com/s/files/1/0430/8720/0418/files/88490639930.pdf
- https://cdn.shopify.com/s/files/1/0430/3945/7429/files/podojineduvutanelomud.pdf
- https://cdn.shopify.com/s/files/1/0437/3259/8938/files/6562820360.pdf
- https://cdn.shopify.com/s/files/1/0432/3796/5979/files/relixoguxowefu.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_off000072de.bin` `1b76a17cb4085f70bc717eb402a6e730d0e27aa8ed607647f8f24659a2869da8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x72DE	5192 bytes
`font_01_sfnt_off00008488.bin` `ab30d11a7827961e03ef3ebbbe27fe8237b29d812633642fa2dc9120fb78f8c9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8488	9880 bytes

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