PDF malware analysis — malicious · 98b4222623a77648

MALICIOUS

PDF

35.2 KB Created: 2020-08-30 17:32:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a20496f070edaa11d4b538daab434e69 SHA-1: a07a92b70b10680c898f0d259cf64cced4358509 SHA-256: 98b4222623a776487b26ec9fc2a17321bfb81951086a31ffd3a13b569ec9c351

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link that redirects to known malicious infrastructure, disguised as a marketing textbook. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms this. The PDF also contains a large number of external links, many pointing to Shopify, which is indicative of a link farm used for SEO poisoning to improve search engine rankings for malicious content. 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.com/wix?keyword=marketing+9th+edition+lamb+hair+mcdaniel
- https://static.usrfiles.com/ugd/36f25b_650af7df539b41288483fd6db46da68f.pdf
- https://static.usrfiles.com/ugd/6d59ab_06d449f4e03243479c875308935985d0.pdf
- https://static.usrfiles.com/ugd/d3758e_c4e687413e374c96bc2453d6fb49a425.pdf
- https://static.usrfiles.com/ugd/b8c837_733be6816e294ab59cf03ba9757d797e.pdf
- https://cdn.shopify.com/s/files/1/0431/0751/6578/files/lexurigem.pdf
- https://cdn.shopify.com/s/files/1/0431/7180/7381/files/11720258685.pdf
- https://cdn.shopify.com/s/files/1/0428/9570/4220/files/58535157496.pdf
- https://cdn.shopify.com/s/files/1/0430/0183/9775/files/91483949122.pdf
- https://static.usrfiles.com/ugd/8cbfce_598923a819774e16b42700b60c28b0da.pdf
- https://static.usrfiles.com/ugd/b8c837_549edba76ae540a0b124d26c821485ef.pdf
- https://static.usrfiles.com/ugd/8d57bd_99219e848cac42b69494cb55805d158e.pdf
- https://static.usrfiles.com/ugd/e73fea_b152c866dcd54c0cbbc3ee8d6a70c48e.pdf
- https://cdn.shopify.com/s/files/1/0434/9467/0498/files/gudoronipegokikeralakulap.pdf
- https://cdn.shopify.com/s/files/1/0433/8820/7255/files/memotulilonirojopemumag.pdf
- https://cdn.shopify.com/s/files/1/0432/1925/5456/files/diccionario_biodescodificacion_rodilla_derecha.pdf
- https://cdn.shopify.com/s/files/1/0431/3330/4993/files/rujanurisilumipan.pdf
- https://cdn.shopify.com/s/files/1/0436/2888/8227/files/57599532620.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_off00004ba3.bin` `0e26eb50d82e248f73094ee858312e0eb07aa96e3ec12e7febd296fd151f840e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4BA3	5540 bytes
`font_01_sfnt_off00005e50.bin` `429bc9ccde8f84d3562ec839b9f7c880eaeb947987ebd06b132137e72a106c33`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E50	9728 bytes

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