MALICIOUS
192
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of embedded links, many of which point to disposable hosting or known malicious redirectors. The primary malicious URL identified is https://cctraff.ru/strik?keyword=ielts+actual+test+reading+writing+pdf, which is flagged as a malicious redirector. The document's structure and link farm behavior suggest an attempt to lure users to malicious sites, potentially for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://cctraff.ru/strik?keyword=ielts+actual+test+reading+writing+pdf In PDF document text
- https://site-1037906.mozfiles.com/files/1037906/26851566094.pdfIn PDF document text
- https://site-1036838.mozfiles.com/files/1036838/pigakaxupakamakadedol.pdfIn PDF document text
- https://site-1036637.mozfiles.com/files/1036637/17244409145.pdfIn PDF document text
- http://files.annapolisrotaract.org/uploads/1/3/2/6/132681426/jaziwifijopuk-xazisenufefu-xokovuwojobuk.pdfIn PDF document text
- http://nupajuwof.bethlehem-morristown.org/uploads/1/3/1/3/131381679/4c93f1b46aead.pdfIn PDF document text
- http://makaxif.nourishdiy.com/uploads/1/3/1/1/131164250/147720dd4332.pdfIn PDF document text
- http://begur.utcpanhellenic.com/uploads/1/3/1/4/131483112/8924610.pdfIn PDF document text
- http://joxonid.byptrampolines.com/uploads/1/3/1/3/131379730/6427354.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://uploads.strikinglycdn.com/files/9d122742-96b4-4a14-981c-264464c143d3/45350281713.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4870e36d-5b9f-4d48-ac40-4d581f49c353/jobupapezubolupalagulo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/081daf14-acdb-4aec-bb9e-18c1d68af47f/vijixowajajulizonogunise.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4fb810cd-e994-46ec-834a-c70081343d55/gapexitofofe.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9963fbd7-d50a-4754-817e-13094f60a8f0/62709859269.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3779/4204/files/acs_general_chemistry_exam.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0462/6907/1511/files/easy_brain_teasers_with_answers.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2022/1607/files/henry_county_warrant_check.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005103.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5103 | 5124 bytes |
SHA-256: bebd54cb412abb360724bed072de98e866426047bc9f4c86dd8ce627244c4cf7 |
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font_01_sfnt_off00006289.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6289 | 10552 bytes |
SHA-256: 711f91fd2263259c14169e15691bbc1c2eaa46b6d665bbae34ce1a8dbe8f49fa |
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font_02_sfnt_off0000868d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x868D | 4324 bytes |
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230 |
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