MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a large number of embedded URLs pointing to external PDF files, indicating a link farm designed for SEO manipulation or to distribute further malicious content. One URL, 'https://ttraff.ru/wb?keyword=uv%20spectrophotometer%20calibration%20pdf', is identified as a known malicious redirector. The ML classifier also strongly flagged this PDF as malicious.
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.ru/wb?keyword=uv%20spectrophotometer%20calibration%20pdf In PDF document text
- http://files.firewiseconsultants.com/uploads/1/3/1/3/131380467/8300795.pdfIn PDF document text
- http://files.coxautoroadtrip.org/uploads/1/3/0/8/130873893/bepugugidalega.pdfIn PDF document text
- http://files.lashedbyred.com/uploads/1/3/0/7/130775520/vabuzazito.pdfIn PDF document text
- http://files.beachtownrattan.com/uploads/1/3/1/8/131871786/bab71b83868b4fd.pdfIn PDF document text
- http://files.daisysrdc.com/uploads/1/3/0/8/130814279/sixarur.pdfIn PDF document text
- http://files.arelationshipcounselingcenter.com/uploads/1/3/0/7/130738887/58e9bbfb9ce10d5.pdfIn PDF document text
- http://files.qcc.nyc/uploads/1/3/1/4/131453526/236589.pdfIn PDF document text
- http://files.artsmartmanila.com/uploads/1/3/1/8/131856041/9477478.pdfIn PDF document text
- http://files.unclutteredessentialoils.com/uploads/1/3/2/6/132683088/kimatom-nomesofa.pdfIn PDF document text
- http://files.lindyjames-christenson.com/uploads/1/3/1/3/131379612/3953267.pdfIn PDF document text
- http://files.angelicastrologymagic.com/uploads/1/3/1/3/131383959/6162fe.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://gidurum.files.wordpress.com/2020/07/66954528583.pdfIn PDF document text
- https://riwuvot.files.wordpress.com/2020/07/79492515775.pdfIn PDF document text
- https://darewubuj.files.wordpress.com/2020/06/gubibowemivoj.pdfIn PDF document text
- https://sazemod.files.wordpress.com/2020/07/19519115101.pdfIn PDF document text
- https://pitimonuzoxa.files.wordpress.com/2020/06/wiruverevavulesikezasug.pdfIn PDF document text
- https://gutelum.files.wordpress.com/2020/06/86124667545.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tadigepulimo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/75320426607.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lujodegiduwidixerilaji.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69901941500.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wabodenerevugibew.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34888362351.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_off00007222.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7222 | 5376 bytes |
SHA-256: 80e8492bae9f4b0210ef07548b0e8f1fe27eb161057e8b8e1486d2baf1e0343b |
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font_01_sfnt_off00008440.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8440 | 10720 bytes |
SHA-256: 2c7413fa3072a97e59f5f3e84f97084533987bdb447d4efbbdfc87622a46637f |
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