MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous external URLs pointing to other PDFs, many hosted on disposable domains. The heuristic 'PDF_SEO_LINK_FARM' suggests a deliberate attempt to create a large number of links, potentially for SEO manipulation or to distribute malicious content. The presence of embedded URLs and the overall structure strongly suggest this document is part of a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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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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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External URI info PDF_URIPDF contains an external URL action
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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://dugedepap.ru/123?utm_term=spanish+greetings+worksheet+for+elementary PDF link annotation
- http://verifiedbadge-lnstagram.com/gefojipejipiridoniturokhkua.pdfIn PDF document text
- http://befigter.xyz/1620549989m4nyw.pdfIn PDF document text
- http://gemunoz.iblogger.org/92627644809.pdfIn PDF document text
- https://cdn.sqhk.co/pananumujo/hgxTjad/today_show_live_stream_nbc.pdfIn PDF document text
- https://cdn.sqhk.co/libodinidep/hcihdhb/81802109967.pdfIn PDF document text
- http://alfa-quest.ru/18756566182cltbu.pdfIn PDF document text
- https://cdn.sqhk.co/tezizejaropu/dkRSwij/65495061490.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://435a888a-8f80-410d-aa77-77edd6e4491d.filesusr.com/ugd/51fec0_b227889dccb94f6eb7835350484c0860.pdf?index=trueIn PDF document text
- https://1b3e2d6a-0348-4772-9bb2-16e56a761455.filesusr.com/ugd/7bcf02_3b44005099d049df8043f90b6897b308.pdf?index=trueIn PDF document text
- https://d80868e2-5d34-4dda-9345-0396294a35aa.filesusr.com/ugd/f9fac6_9e1f9daca2654e65ada31a2d445a7453.pdf?index=trueIn PDF document text
- https://33edd578-4186-4695-89f3-f56a5a23fc53.filesusr.com/ugd/f17c08_7ae46314af9842d5b658c3de3d9f5253.pdf?index=trueIn PDF document text
- https://7b4e975e-109f-4397-a679-93e438ff1453.filesusr.com/ugd/c33f71_568cf56039534c12940ab4aaa49efb3c.pdf?index=trueIn PDF document text
- https://115777a2-cc0e-4789-9e99-30cf4bdfca1a.filesusr.com/ugd/2b3546_a0488c4249ae40e8933b6f5192136e53.pdf?index=trueIn PDF document text
- https://1416a32c-f91c-4ec3-9c10-bfdf610c7df7.filesusr.com/ugd/76de1a_dbb3fb4e97b942459bc7d0667b82c96e.pdf?index=trueIn PDF document text
- https://0f7a2101-273c-4f7f-b1fd-079d1ad923c1.filesusr.com/ugd/a7ea6f_96702b60875340699a3ebd76d438fb88.pdf?index=trueIn PDF document text
- https://2a07c75e-e898-48ba-b326-4cccc82d0599.filesusr.com/ugd/ff154e_9738fe1e0e24486b951ff32f4c4c0775.pdf?index=trueIn PDF document text
- http://falisetiven.epizy.com/rizanefezikibuxularavani.pdfIn PDF document text
- https://e0529b0e-ffd4-46ae-8a9e-348c3aa8e3ae.filesusr.com/ugd/27320f_9fb4151229884eb69bc038ee95314346.pdf?index=trueIn PDF document text
- https://99f4a897-b223-4833-863a-50ad465ba5d5.filesusr.com/ugd/8e2371_961b236e92614bd681377e9843b16147.pdf?index=trueIn PDF document text
- https://cc67bef4-e22e-42fd-bf01-3f02b15f800b.filesusr.com/ugd/080020_510b5ca0eba1445d93d64c1778526aad.pdf?index=trueIn 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_off0000e4fc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE4FC | 5676 bytes |
SHA-256: 007830319d8b6b24aa49aa5caacb332a646d22df3e9da59b074722cd731ab8ab |
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font_01_sfnt_off0000f839.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF839 | 10568 bytes |
SHA-256: 796740d531dda4040c91b3b5bb7712ed45367fe2f4562b490935d883f7561d60 |
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