MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, with several pointing to suspicious domains like 'yafferge.ru' and 'podarokinsta.site'. Heuristics indicate these links are part of a malicious redirector and a link farm, suggesting the document's primary purpose is to direct users to potentially harmful websites. The ML classifier and ClamAV detection strongly support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9988
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://yafferge.ru/award?keyword=my+first+bilingual+picture+dictionary+pdf In PDF document text
- http://podarokinsta.site/89449514048jtxy.pdfIn PDF document text
- http://redita.fun/anne_frank_powerpoint_tesfloa0.pdfIn PDF document text
- http://bufovapafiwew.22web.org/39455851331.pdfIn PDF document text
- http://good-production16.site/14341264144s31sv.pdfIn PDF document text
- http://jejunobu.iblogger.org/strategies_to_support_students_with_autism_in_the_classroom.pdfIn PDF document text
- http://center-about.com/jomidixzjo88.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://perevis.epizy.com/sekevuvadaritimas.pdfIn PDF document text
- http://dunixojojulif.epizy.com/wazaf.pdfIn PDF document text
- https://2a085669-a8dc-40eb-b1d3-71ea9d660f60.filesusr.com/ugd/cafc24_cdc9619aa0a643758819d5814efab1a2.pdf?index=trueIn PDF document text
- https://e02212b7-c8ec-4bf5-ba3e-d68a1de675e0.filesusr.com/ugd/7f1d73_f52e49f6a6d94ac2b6bdd570f39f4dd2.pdf?index=trueIn PDF document text
- http://maxunifox.epizy.com/37611479374.pdfIn PDF document text
- https://d8acad56-eb9a-42d1-a06c-a695c5b02328.filesusr.com/ugd/0ad6c7_e261bd669ca44c1bbccf87ca452818d3.pdf?index=trueIn PDF document text
- https://cbb9655c-b60d-4095-8c1c-bb5f9a2903c5.filesusr.com/ugd/4dd980_916889eb974d492aa572f9b24613f616.pdf?index=trueIn PDF document text
- https://51bf459c-6b46-41b0-863f-532cf8a77e0d.filesusr.com/ugd/2eedf1_3f94ffe1d5a64b6e8526635a3afdde73.pdf?index=trueIn PDF document text
- https://22e365c6-0853-42e1-82f8-83473bf9c0bf.filesusr.com/ugd/217d68_a6f5f318a2974b368d26420250cbf4e4.pdf?index=trueIn PDF document text
- https://42f4b946-f871-4f2a-a73e-6571c6569919.filesusr.com/ugd/e20521_8ab4ff35f10a4ab29069056b64eb2074.pdf?index=trueIn PDF document text
- https://43081b45-6e48-4b43-b724-9328fda377ae.filesusr.com/ugd/26481d_c20e8adf66e347f3ad1afae1048130ec.pdf?index=trueIn PDF document text
- https://48e4e0df-78ce-4736-8797-27735e68dc67.filesusr.com/ugd/f3b179_4d03751789fc452c87adf7d4bbc06bbc.pdf?index=trueIn PDF document text
- https://59bb578d-b312-442a-858b-1a1a54b18a6c.filesusr.com/ugd/c79b1c_f8720eeba88c469fb42910076e1df23c.pdf?index=trueIn PDF document text
- https://7ffe38df-ef78-47a1-8632-a9c579db478a.filesusr.com/ugd/8ff694_187b4b5664ae40f79eeae9ffc841e6b3.pdf?index=trueIn 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_off0000f4c7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4C7 | 5568 bytes |
SHA-256: 32bdb25bc085c817f97ec56530436e3b11e5061016a0cc3df5231df05441a5b5 |
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font_01_sfnt_off000107db.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x107DB | 10240 bytes |
SHA-256: 73536797216b67f6c566ef7d70ce4032a16b2c87460f96320b9728f32e247a7a |
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