MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document contains a large number of embedded links, many of which point to disposable hosting or redirector infrastructure, indicating a link farm designed to distribute malicious content. The primary malicious URL identified is https://cctraff.ru/123, which is associated with known malicious redirector activity. The document's content, though obfuscated, appears to be a lure related to 'quadratic applications word problems'.
Machine Learning
- Nyx PDF Classifier malicious score 0.9984
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://cctraff.ru/123?utm_term=quadratic+applications+word+problems+day+8 In PDF document text
- https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/2d8079f5f.pdfIn PDF document text
- https://vimefipivarek.weebly.com/uploads/1/3/4/3/134310944/8486537.pdfIn PDF document text
- https://sekojufakov.weebly.com/uploads/1/3/0/7/130776719/068586e6.pdfIn PDF document text
- https://reredutubonuki.weebly.com/uploads/1/3/0/7/130775370/nepadakumanizu.pdfIn PDF document text
- https://rozazokosu.weebly.com/uploads/1/3/0/8/130813972/1533800.pdfIn PDF document text
- https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/sedesifig-koneponezati-xupojeruvis.pdfIn PDF document text
- http://www.opentle.orgIn 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://s3.amazonaws.com/fosagobomap/socomec_atys.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d4a17893-07ea-4c4a-ad60-7750bb9c6d8f/fewodadorugidugaxekusavas.pdfIn PDF document text
- https://s3.amazonaws.com/nepawigexa/doweboxoreziwiraxusedag.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9b5618ce-2fab-4ab8-b414-0e472fb3adfa/35272747778.pdfIn PDF document text
- https://s3.amazonaws.com/levumoduf/mapova.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 5
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
stream_003_off00016b1e.bin |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x16B1E | 13876 bytes |
SHA-256: 3db0db01c4f35139ccf0a2a77f95805a4312094d889f7ccab8373d8b7ec6fa5a |
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font_00_sfnt_off000157d8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x157D8 | 5688 bytes |
SHA-256: ffb626421ff95df32e4c33207d1b7617b810a93c14ef915a0a60edba2e9cd1c2 |
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font_02_sfnt_off0001922b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1922B | 12608 bytes |
SHA-256: ae4e641a53f5b7e8e07f7cd9cb3f852e430a9ab545e6b99b2800894d21c47d33 |
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font_03_sfnt_off0001bb56.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1BB56 | 16144 bytes |
SHA-256: a0532d1212509dae036733b1fb6f303b0d7fd7a209d3928fdad713008da19d30 |
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font_04_sfnt_off0001d051.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1D051 | 4324 bytes |
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71 |
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