MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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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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://kuzutuzo.ru/strik?utm_term=grade+1+reading+worksheets+pdf+free PDF link annotation
- https://cdn-cms.f-static.net/uploads/4454184/normal_601148bda713e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4451940/normal_6047fd97bd926.pdfIn PDF document text
- http://dizurexemubegog.mygamesonline.org/negoma.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://77da94c0-0f0a-445b-87af-e489a0b5ef66.filesusr.com/ugd/db1da1_86152e0b3b0a425393c3ce140176a450.pdf?index=trueIn PDF document text
- https://997b2cc2-d96d-4654-b184-8a5d7ad473c0.filesusr.com/ugd/b8d08c_c4ee618f25c744e3be19acc178d2c1be.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/f8cfaf36-4319-4892-b917-1c4f52cabcf4/64448760030.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e0f9191c-31af-44e8-b74b-e55792ea4c0a/38480123762.pdfIn PDF document text
- https://923a8ca3-316b-4844-b38f-9bc955ad4852.filesusr.com/ugd/312e0e_0c7657ac4dbc4880a1907cc66212b923.pdf?index=trueIn PDF document text
- https://10bc5e17-7652-4c7e-9b43-999b3eb3b021.filesusr.com/ugd/5edc69_cbc8b7a3ee39421caa565a11a4d70149.pdf?index=trueIn PDF document text
- https://b3695a61-a5b7-457a-863f-99677d03e0cc.filesusr.com/ugd/f2a82d_5551edf8f9ed45ec99f7d52f5c3c9c6d.pdf?index=trueIn PDF document text
- https://8d59741e-369e-44be-b01e-8fbcb09d2d01.filesusr.com/ugd/7cefa9_1a16cce440754d8398cd158d04f1dc7c.pdf?index=trueIn PDF document text
- http://perexuwofogefo.onlinewebshop.net/roduxovalezek.pdfIn PDF document text
- https://6632aaff-1fe9-4f1d-acb3-7d444e457837.filesusr.com/ugd/ce4b7c_e42d7d26e94a4f8fa897183a30926933.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/33957a23-504d-4f6a-8dfb-9488a930cd60/lumujo.pdfIn PDF document text
- https://68358877-4ee6-4e53-94f7-4bd9665c1f53.filesusr.com/ugd/3bbd68_c26f3fca61ec419a8265fc871421c4d4.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/b2450781-701d-434e-aa15-112bc7b210fb/sap_grc_tutorial_point.pdfIn PDF document text
- https://18cceff7-6d50-42ec-9d85-67184b61345e.filesusr.com/ugd/8c2e83_a91c37909db9459d8f227c8ded8e1be6.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/89ca4857-e8a7-4bac-86c4-3f6c064be537/maslach_burnout_inventory.pdfIn PDF document text
- http://kakavogulogij.onlinewebshop.net/rimudona.pdfIn PDF document text
- https://69c5641f-197a-42c1-bef1-daa502c1f1d7.filesusr.com/ugd/948cea_da23a87d45e84387b06021974dc77f7a.pdf?index=trueIn PDF document text
- https://dbba0f06-1911-40f0-8c80-a2638c7f81cc.filesusr.com/ugd/b13fd1_0fa71409ddd243d1a5d5195bbc2ff2c4.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_off0000f391.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF391 | 5508 bytes |
SHA-256: d3c74ba0ada245fa15a18ce39481317639a77c04a1225a7fe400599f55b6b829 |
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font_01_sfnt_off00010667.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10667 | 10348 bytes |
SHA-256: 7de78dcda6cc02726c7ad6c3dfc87137ad4affa540bff92fcc0bb32936290b73 |
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