MALICIOUS
162
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains embedded links, one of which, https://ttraff.ru/wix?keyword=letter+of+complaint+useful+phrases, is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is a lure for 'letter of complaint useful phrases', aligning with phishing tactics. The presence of numerous external PDF links further indicates a link farm, often used to distribute malicious content or for SEO manipulation to improve the ranking of malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF 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.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall 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.
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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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=letter+of+complaint+useful+phrases
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/aef5b7_3b5c61ca5f4f415592eb710360d1c32c.pdf
- https://static.usrfiles.com/ugd/b8c837_4373865ff713443e9c4123674c41c7e9.pdf
- https://static.usrfiles.com/ugd/97634b_ba4539a8f6194c71b47c66605fc91eae.pdf
- https://static.usrfiles.com/ugd/10b11f_8b252040f8794d3890933bd06c6723c0.pdf
- https://static.usrfiles.com/ugd/cc03df_a07ecbd3e4e349998ce86ca2125b23c2.pdf
- https://cdn.shopify.com/s/files/1/0435/5896/1320/files/9863695971.pdf
- https://cdn.shopify.com/s/files/1/0440/2796/9686/files/22036849728.pdf
- https://cdn.shopify.com/s/files/1/0429/5042/6787/files/99810243233.pdf
- https://cdn.shopify.com/s/files/1/0433/8103/1064/files/jonanaraxo.pdf
- https://cdn.shopify.com/s/files/1/0433/9721/8467/files/vizedukoxejetifevugu.pdf
- https://cdn.shopify.com/s/files/1/0434/7274/8710/files/warhammer_40k_tyranids_8th_codex.pdf
- https://cdn.shopify.com/s/files/1/0427/4490/5884/files/39019565114.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_off000069ff.bin0165a7acfa2d588e7564c2dac25d4cbfb7f17f7bc13f2d8aff141cc2a41d4056 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x69FF | 5196 bytes |
font_01_sfnt_off00007b7f.bin2ceb4ba9bcc86d0eadba960c739fdc05ce731bcdfd9c06c1f2aea6023f245a94 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7B7F | 10192 bytes |
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