PDF malware analysis — malicious · d5671e905cd41458

MALICIOUS

PDF

48.3 KB Created: 2020-08-03 00:43:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ad06026cf5b517ef2029361d3577e4f3 SHA-1: cea683d73b358cdb52d73f5d5e7bde794e3f011d SHA-256: d5671e905cd41458ee15650566f519231d413adf270d48d476ded79579853379

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm used for SEO poisoning or to host malicious redirects. The primary malicious URL identified is https://ttraff.ru/pify?keyword=clean+needle+technique, which is flagged as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains references to the 'clean needle technique' and the URLs, suggesting a lure to external malicious content.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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=clean+needle+technique
- http://files.grumpypuppybarkery.com/uploads/1/3/2/6/132681885/f72e1fd17515.pdf
- http://files.5elements.ch/uploads/1/3/1/3/131382134/630625.pdf
- http://files.copywriter-edge.com/uploads/1/3/0/8/130873855/6457802.pdf
- http://files.survivehc.com/uploads/1/3/0/8/130874240/9935286.pdf
- http://files.cm-miller.com/uploads/1/3/2/6/132681836/6805403.pdf
- https://cdn.shopify.com/s/files/1/0433/8555/3061/files/xazatuxerawutax.pdf
- https://cdn.shopify.com/s/files/1/0430/9378/6791/files/58683464594.pdf
- https://cdn.shopify.com/s/files/1/0434/4751/7341/files/17829497431.pdf
- https://cdn.shopify.com/s/files/1/0431/3900/6632/files/xesuzin.pdf
- https://cdn.shopify.com/s/files/1/0430/2589/1479/files/lodadamutoreja.pdf
- https://cdn.shopify.com/s/files/1/0432/4697/7179/files/14704536900.pdf
- https://cdn.shopify.com/s/files/1/0431/4827/9970/files/domupa.pdf
- https://cdn.shopify.com/s/files/1/0428/0100/4707/files/94750535601.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1188956193.pdf
- https://cdn.shopify.com/s/files/1/0428/8767/6063/files/54537404108.pdf
- https://cdn.shopify.com/s/files/1/0429/6274/7548/files/sokozaguxodi.pdf
- https://cdn.shopify.com/s/files/1/0433/7516/5594/files/7193415318.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_off00007f8f.bin` `96bd10c32025771393d29b77c002b3ada0e58503269c8ecb6515e8a581a2499c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7F8F	4784 bytes
`font_01_sfnt_off00008fcb.bin` `7b6f53cbab874e7a48e9d7a845ad10eba3d0a5a843f98a5796954a4b1fdfedc1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8FCB	10800 bytes

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