MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a large number of embedded links, many pointing to seemingly benign PDF files, but one critical link directs to a known malicious redirector. This suggests a tactic to obscure malicious intent by burying it within a large collection of links, potentially to evade detection or to appear as a legitimate link farm. The ML classifier also strongly indicated maliciousness.
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/wix?keyword=step+up+to+writing+printables
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/b8c837_2b14eb682f704021adc5dfbf9910e8c5.pdf
- https://static.usrfiles.com/ugd/b8c837_6cbaf4432a3240aebeb8cc751c0e4c84.pdf
- https://static.usrfiles.com/ugd/44b221_941c898e4c7b4721893bdc935bd00bb5.pdf
- https://static.usrfiles.com/ugd/b8c837_ba3326000c4c431b9463f4676d64e347.pdf
- https://cdn.shopify.com/s/files/1/0437/0428/7383/files/top_down_and_bottom_up_budgeting_in_project_management.pdf
- https://cdn.shopify.com/s/files/1/0432/8616/7702/files/public_health_act_and_policies_in_zambia.pdf
- https://cdn.shopify.com/s/files/1/0464/7691/8934/files/joled.pdf
- https://cdn.shopify.com/s/files/1/0431/8117/9037/files/luduvuka.pdf
- https://cdn.shopify.com/s/files/1/0437/8542/0949/files/voletabazi.pdf
- https://cdn.shopify.com/s/files/1/0437/0087/9510/files/77330250673.pdf
- https://cdn.shopify.com/s/files/1/0451/1550/6853/files/action_bar_text_align_center_android.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_off000061b0.bin87634e52941d0ac0d6c95c23f3ccd335024460689a07e6dac0ce0444db018966 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x61B0 | 5324 bytes |
font_01_sfnt_off000073e8.bin76d7d21f83be2dfb01aac2fec9878c0f8035d4444a3e9bf1a5d99dc7d558d819 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x73E8 | 10188 bytes |
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