PDF malware analysis — malicious · 66ffca13a307741f

MALICIOUS

PDF

41.6 KB Created: 2020-08-30 08:54:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: dff44bf538ff2ebe7783b71affb0bd0d SHA-1: c89e037ebdead07d6e3f6c8fbb8c836757157bbe SHA-256: 66ffca13a307741f1c4ec346b0887ed88a608d4cf78ed21fc414a0983466e2de

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a significant number of embedded links, many pointing to Shopify-hosted PDFs, forming a link farm. One critical URL, https://ttraff.cc/wix?keyword=birdland+sheet+music+pdf+concert+ban, is flagged as a malicious redirector. The document's structure and embedded links suggest an attempt to manipulate search engine results or redirect users to malicious content, likely as part of a phishing or SEO spam campaign.

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.cc/wix?keyword=birdland+sheet+music+pdf+concert+ban
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0458/1664/3750/files/58732744832.pdf
- https://cdn.shopify.com/s/files/1/0463/7389/6353/files/76458668206.pdf
- https://cdn.shopify.com/s/files/1/0434/2946/2165/files/62310975711.pdf
- https://cdn.shopify.com/s/files/1/0435/0712/2342/files/boss_2_songs_free.pdf
- https://cdn.shopify.com/s/files/1/0431/0273/2448/files/sims_4_games4theworld.pdf
- https://cdn.shopify.com/s/files/1/0429/3980/9959/files/marianne_moore_poems.pdf
- https://static.usrfiles.com/ugd/b8c837_cc37905c63864e108382a3c83f22ecf5.pdf
- https://static.usrfiles.com/ugd/b8c837_5a9734a297ca4871a6edb910b305b522.pdf
- https://static.usrfiles.com/ugd/3aca14_266cf9a218e54563b3b666318f85fbe3.pdf
- https://static.usrfiles.com/ugd/3e9e83_1724c6b50b974ce5b9830c28a792c765.pdf
- https://static.usrfiles.com/ugd/77eba6_f6210814159c4c26aff6049afb705b90.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_off000064bb.bin` `f224a1d8f79fc2be2f891213ae8e2881c8f6923ae8cc1ea24849534dba366cfe`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64BB	5584 bytes
`font_01_sfnt_off0000777b.bin` `8d380dd1c1290ffcbc12d6d7bc404c54c80f8cf4746d59b30c7aa75ebbb0daea`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x777B	10032 bytes

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