MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains embedded links, with one pointing to a known malicious redirector at 'https://ttraff.ru/wb?keyword=lyophilization%20process%20validation%20pdf'. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content. The document body, though heavily obfuscated, contains the same URL, reinforcing the lure.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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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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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/wb?keyword=lyophilization%20process%20validation%20pdf
- http://files.mygreenage.com/uploads/1/3/0/8/130814355/916560e4151353.pdf
- http://files.cakesncupcakes4u.com/uploads/1/3/1/4/131406337/wizukusura-vawipaluw-pajotajifogo-legasevetejexa.pdf
- http://files.jclandscapingandmasonry.com/uploads/1/3/1/6/131637014/novixomuse_zagipezamej_karatekaze.pdf
- https://cdn.shopify.com/s/files/1/0437/8856/6677/files/after_effects_cc_2020_shortcuts.pdf
- https://cdn.shopify.com/s/files/1/0435/5905/9615/files/febawipivugexazakafuf.pdf
- https://cdn.shopify.com/s/files/1/0436/4979/4213/files/ruvozefeg.pdf
- https://cdn.shopify.com/s/files/1/0432/1853/4557/files/acidosis_metabolica_pediatria.pdf
- https://cdn.shopify.com/s/files/1/0440/6378/5112/files/93880382828.pdf
- https://cdn.shopify.com/s/files/1/0427/8334/2748/files/73681401388.pdf
- https://cdn.shopify.com/s/files/1/0431/6413/9669/files/lotulaxeguge.pdf
- https://cdn.shopify.com/s/files/1/0430/8716/7645/files/russian_language_basic_words.pdf
- https://cdn.shopify.com/s/files/1/0427/3173/3159/files/6594562416.pdf
- https://cdn.shopify.com/s/files/1/0433/1785/4373/files/finite_automata_tutorial.pdf
- https://cdn.shopify.com/s/files/1/0437/4206/8887/files/python_norm.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_off0000db83.bin7375f741ac03d451215464748e674a747e11502cc6ad64d7472f61902157328f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB83 | 5396 bytes |
font_01_sfnt_off0000ede1.bin68f2cbf3028e8a17f78d98b47c082fd977fd64a92859d715b88d3f129fb826bf |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEDE1 | 10512 bytes |
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