MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file contains a large number of embedded links, many of which point to disposable hosting and are likely part of a link farm. One critical heuristic identified a link to known malicious redirector infrastructure, suggesting the document is designed to lead users to malicious sites. The ML classifier also strongly indicated maliciousness.
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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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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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.cc/wb?keyword=cplex%20python%20reference%20manual In PDF document text
- http://files.susanwardbooks.com/uploads/1/3/1/6/131606670/fbfbbaf46c4.pdfIn PDF document text
- http://files.hazelsoper.com/uploads/1/3/0/7/130775747/5386495.pdfIn PDF document text
- http://files.stokesdaleumc.org/uploads/1/3/2/6/132695325/cdb2df88.pdfIn PDF document text
- http://files.tattered-dragon.com/uploads/1/3/2/6/132682778/ae0fba8829.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://lipivova103284907.files.wordpress.com/2020/06/8535573687.pdfIn PDF document text
- https://sebonan.files.wordpress.com/2020/06/rezuxomu.pdfIn PDF document text
- https://lixofejuj.files.wordpress.com/2020/07/nibusezaneni.pdfIn PDF document text
- https://jekaxiwu.files.wordpress.com/2020/07/faxurevibejig.pdfIn PDF document text
- https://nedepiru.files.wordpress.com/2020/06/kezanakinuxebapikaburas.pdfIn PDF document text
- https://natebiwogu.files.wordpress.com/2020/07/60410266165.pdfIn PDF document text
- https://mujesovo.files.wordpress.com/2020/07/52077467344.pdfIn PDF document text
- https://sipemuxi.files.wordpress.com/2020/06/97473182417.pdfIn PDF document text
- https://nakeset.files.wordpress.com/2020/06/97747532090.pdfIn PDF document text
- https://dipajar.files.wordpress.com/2020/06/84044902153.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9969/2958/files/1135918153.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4296/3613/files/88490257821.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bovabokuvuxinapuwukiberem.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8356/3162/files/98091167212.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/berujixawajibexuxutuzogar.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7857/4490/files/bikirur.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005b7d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5B7D | 5104 bytes |
SHA-256: a0f805132661262d679b4711dab71337e8833d99de962f883158c015fa30ae6a |
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font_01_sfnt_off00006cb8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6CB8 | 9916 bytes |
SHA-256: d63334a9296dbe68cd536fceab1bc71fb065341149efe408ca1e3f81a6b28f4c |
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