MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged as malicious by a machine learning classifier and contains a critical heuristic indicating it is a redirector link to known malicious infrastructure. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs pointing to various external resources. The primary malicious URL identified is ttraff.ru, which is likely used to redirect users to a phishing or malware-hosting site. The document body contains text related to 'avg antivirus windows 7 32 bit', suggesting a lure to entice users to click the malicious links.
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=avg+antivirus+windows+7+32+bit
- https://cdn.shopify.com/s/files/1/0435/0522/1784/files/wow_classic_warrior_bis.pdf
- https://cdn.shopify.com/s/files/1/0436/4979/4213/files/calculations_in_quantum_chemistry.pdf
- https://cdn.shopify.com/s/files/1/0433/1008/8360/files/cover_letter_template_for_customer_service_representative.pdf
- https://cdn.shopify.com/s/files/1/0428/8865/9100/files/le_barycentre_dans_le_plan.pdf
- https://static.usrfiles.com/ugd/b8c837_6488a0cfe728435b831603c2fb947484.pdf
- https://cdn.shopify.com/s/files/1/0433/5376/8095/files/acute_poststreptococcal_glomerulonephritis.pdf
- https://cdn.shopify.com/s/files/1/0434/2222/0439/files/15234122421.pdf
- https://static.usrfiles.com/ugd/d38238_18cf28aa821b489087b2c5b03c91bc48.pdf
- https://static.usrfiles.com/ugd/07e02c_361386b98c76424e8ca4f189b420fa9b.pdf
- https://static.usrfiles.com/ugd/12dc78_7cec4618ed0f451390bae2db25409253.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_off00006393.bin0d6623c436558d4377eb630a0cc0a4577e752e2f873e09d02cf99a9776f16b07 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6393 | 5616 bytes |
font_01_sfnt_off000076dc.binc43285da7e0634ee77dc20162344fe2aafcb425f5cff66bad00beb1c6a498ecf |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x76DC | 10692 bytes |
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