PDF malware analysis — malicious · a7b5959d6176dfd5

MALICIOUS

PDF

45.9 KB Created: 2020-07-31 19:18:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b558b3fec443efecd59b4942dbef96d6 SHA-1: 3b11e9c92c56edf9cf75f77fcb0ed6dbc843eda8 SHA-256: a7b5959d6176dfd5e387ade0976a5db4f000671b7ba8a60aaeae6b16d592f7d0

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, constituting a link farm. One of these links, 'https://ttraff.cc/pify?keyword=koka+shastra+pdf', is identified as a known malicious redirector. The document's primary function appears to be directing users to potentially malicious or unwanted content through this extensive network of links. No scripts were extracted from this sample.

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.cc/pify?keyword=koka+shastra+pdf
- http://files.jiannamariel.com/uploads/1/3/0/7/130739452/gadatebepeke_pekedip.pdf
- http://files.thevillageshala.com/uploads/1/3/0/9/130969915/c9588dc736dd7c1.pdf
- http://files.tacticalmitigation.com/uploads/1/3/2/7/132710743/1736828.pdf
- http://files.mypointmaps.com/uploads/1/3/2/6/132681882/bipunimozewi.pdf
- https://cdn.shopify.com/s/files/1/0430/7537/1162/files/kobumokojisik.pdf
- https://cdn.shopify.com/s/files/1/0435/5004/8420/files/walefegipixifiveg.pdf
- https://cdn.shopify.com/s/files/1/0429/6962/8828/files/2884953115.pdf
- https://cdn.shopify.com/s/files/1/0431/6925/1492/files/birosexolozu.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41448402009.pdf
- https://cdn.shopify.com/s/files/1/0432/4104/6171/files/67486966155.pdf
- https://cdn.shopify.com/s/files/1/0427/9848/1564/files/11899325936.pdf
- https://cdn.shopify.com/s/files/1/0429/7365/9290/files/93307633637.pdf
- https://cdn.shopify.com/s/files/1/0440/0313/1542/files/73897560566.pdf
- https://cdn.shopify.com/s/files/1/0430/8297/3346/files/serofozirujegaxemorafov.pdf
- https://cdn.shopify.com/s/files/1/0440/1430/5430/files/bafujotirapizemuwexajus.pdf
- https://cdn.shopify.com/s/files/1/0431/6777/6919/files/diviruwan.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_off0000693c.bin` `b9dd62eca6547d9c46751bb8e7143309bca1225ff23df04b5d32407b7ac92b05`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x693C	5132 bytes
`font_01_sfnt_off00007aab.bin` `f9279a7333f66e059d5b57fb4d3cae2ba8e1522dfe680fcfe9f1ed45d50872f9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7AAB	10540 bytes
`font_02_sfnt_off00009efd.bin` `97551253d73ffc24f3088a179768a23da61ec373fd0e4c77b20d8363debaa2d2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9EFD	2968 bytes

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