MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links pointing to various domains, many of which appear to be disposable hosting. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains URLs that are consistent with the link farm heuristic, suggesting a coordinated effort to drive traffic to potentially 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://gettraff.ru/strik?keyword=elements+of+chemical+reaction+engineering+4th+edition+appendix In PDF document text
- http://files.alicelawrancexx.com/uploads/1/3/0/7/130740622/978365.pdfIn PDF document text
- http://files.fieldofdreamshuntprogram.org/uploads/1/3/1/0/131070761/sojap.pdfIn PDF document text
- http://files.ohonnury.com/uploads/1/3/0/9/130969735/9358042.pdfIn PDF document text
- http://files.gradyquintal.com/uploads/1/3/0/8/130874317/3559419.pdfIn PDF document text
- http://xonasemiv.wordriff.com/uploads/1/3/1/0/131070381/lojinir-wasul-kidukewepekunu.pdfIn PDF document text
- http://rufimij.whatsnextmiddlesex.org/uploads/1/3/1/6/131606407/maruwisep-lupurikarogif.pdfIn PDF document text
- http://files.maryfultonfit.com/uploads/1/3/0/7/130739218/591365aab20.pdfIn PDF document text
- http://files.matthewskues.co.uk/uploads/1/3/1/3/131383456/nesawufawuv.pdfIn PDF document text
- http://vokalul.ablmembersarea.com/uploads/1/3/1/8/131857631/mexevojojotekokud.pdfIn PDF document text
- http://files.ridgeclinicairliebeach.com/uploads/1/3/1/4/131483327/1c90abe0ad57.pdfIn PDF document text
- https://site-1036821.mozfiles.com/files/1036821/76531802555.pdfIn PDF document text
- https://site-1038948.mozfiles.com/files/1038948/nabuzevazelunal.pdfIn PDF document text
- https://site-1039331.mozfiles.com/files/1039331/jezenapobewepasakimodivi.pdfIn PDF document text
- https://site-1039779.mozfiles.com/files/1039779/dubaz.pdfIn PDF document text
- https://site-1037111.mozfiles.com/files/1037111/dosijefasakotusena.pdfIn PDF document text
- https://site-1041183.mozfiles.com/files/1041183/28174649843.pdfIn PDF document text
- https://site-1039847.mozfiles.com/files/1039847/pofebukuwililibamiwowabo.pdfIn PDF document text
- https://site-1040321.mozfiles.com/files/1040321/tesubovezoxi.pdfIn PDF document text
- https://site-1042677.mozfiles.com/files/1042677/rivajodemakebagebavuk.pdfIn PDF document text
- https://site-1037149.mozfiles.com/files/1037149/xogobezitirexev.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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_off00004ed9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4ED9 | 5680 bytes |
SHA-256: 3dc4981463b42cfd05fc52d8b2870597719189c5a50335c510a2cd81d9b38e1b |
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font_01_sfnt_off00006214.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6214 | 9192 bytes |
SHA-256: ba75e0a77b9ceebba06eeb46f847aa4de76fb5c010fbebf0e7c0f2e25a8ae191 |
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