PDF malware analysis — malicious · 6cffa9e879477f70

MALICIOUS

PDF

40.4 KB Created: 2020-09-01 11:47:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 7073b34707e5db59c60b9709905cc555 SHA-1: fa57da07fa53dde1ede53614bba540d02595b891 SHA-256: 6cffa9e879477f704095f820891f009adb05ededfc6c2b524a9371751257c422

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/wix?keyword=idle+champions+gromma+guide, suggesting a lure to a malicious site. The presence of multiple Shopify links indicates a link farm strategy, common in SEO poisoning attacks.

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/wix?keyword=idle+champions+gromma+guide
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0428/2613/7756/files/cristianismo_puro_e_simples_download.pdf
- https://cdn.shopify.com/s/files/1/0437/6225/3982/files/genetic_disorders_articles.pdf
- https://cdn.shopify.com/s/files/1/0429/9282/8579/files/jasetugunawemajofamiram.pdf
- https://cdn.shopify.com/s/files/1/0437/0009/3083/files/solemi.pdf
- https://static.usrfiles.com/ugd/b8c837_771c7bb782ae4ffabacd897664d6389f.pdf
- https://static.usrfiles.com/ugd/a58b01_db43d80b44b049de98aec790e017ad9f.pdf
- https://cdn.shopify.com/s/files/1/0429/5757/0207/files/majoras_mask_mod.pdf
- https://cdn.shopify.com/s/files/1/0430/0688/6051/files/65843580501.pdf
- https://cdn.shopify.com/s/files/1/0434/7363/3432/files/ripavuwevolaposofavotupin.pdf
- https://cdn.shopify.com/s/files/1/0432/3128/1312/files/girewiw.pdf
- https://static.usrfiles.com/ugd/90423f_0c9d64cf2150421781026c361c36181b.pdf
- https://static.usrfiles.com/ugd/278743_208bbe5465ab49feae9621057b77589e.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/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000556a.bin` `dcf1c17d5ea4831f358976bbf2a055c0be7a9acffc34b50f6b4314f826d9dbb7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x556A	5424 bytes
`font_01_sfnt_off000067b2.bin` `ecb080167c58eb57e2ad265c575bf68b211dcc0d90d4f3fac947717ecbf6309b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x67B2	14808 bytes

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