PDF malware analysis — malicious · 3077f7d3072513e5

MALICIOUS

PDF

42.2 KB Created: 2020-08-04 16:40:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 2ee652779d38861ca5e0119d99748e37 SHA-1: 734ed2d34c3fa8ae275ba02d37adfc045f66b900 SHA-256: 3077f7d3072513e58b6c4901b1952d9dab00def7049bd31038b70788e3cda1ac

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=sector+agropecuario+definicion+pdf', which is flagged as malicious. This suggests the document is part of a link farm or SEO poisoning campaign designed to redirect users to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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=sector+agropecuario+definicion+pdf
- http://files.peoriasupertow.com/uploads/1/3/0/8/130814611/6242181.pdf
- http://files.aartismithmadan.com/uploads/1/3/2/6/132681851/bb2229c5eaa.pdf
- http://files.mrball.org/uploads/1/3/1/3/131398224/60739bc3.pdf
- https://cdn.shopify.com/s/files/1/0428/5969/2198/files/mazamidut.pdf
- https://cdn.shopify.com/s/files/1/0431/6263/2346/files/dufazuxe.pdf
- https://cdn.shopify.com/s/files/1/0433/0432/1184/files/xumuneba.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66541571973.pdf
- https://cdn.shopify.com/s/files/1/0428/8951/1071/files/pimifikotelekotijeg.pdf
- https://cdn.shopify.com/s/files/1/0430/9758/7861/files/47340089071.pdf
- https://cdn.shopify.com/s/files/1/0431/4293/8784/files/dipetuj.pdf
- https://cdn.shopify.com/s/files/1/0429/9302/5183/files/98779401759.pdf
- https://cdn.shopify.com/s/files/1/0434/7779/4982/files/vejirim.pdf
- https://cdn.shopify.com/s/files/1/0431/0374/8263/files/giwof.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_off00006834.bin` `ca626eb94dbc2b73adaf6d612641ea9b3e312dabf85bd6ad0eef473a4933034b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6834	5216 bytes
`font_01_sfnt_off00007a04.bin` `329c4ae5dbdb25005afefb60a7419cc770fafeb2ec0d78a2b8b8a7a0563472db`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7A04	9984 bytes

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