MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF file flagged by ClamAV as Pdf.Phishing.Trojan and by a machine learning classifier. It contains a significant number of embedded links, with one specifically identified as a malicious redirector. The presence of numerous links, some hosted on disposable infrastructure, indicates an attempt to lure users to malicious sites, likely for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://dafemum.ru/wix?keyword=levers+worksheet+answer+key In PDF document text
- https://cdn-cms.f-static.net/uploads/4388620/normal_60510a036c32b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366961/normal_604875c8d4b5d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393356/normal_6057c5f57cbbc.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4458824/normal_6014434e37790.pdfIn PDF document text
- https://zuwogirunuwexi.weebly.com/uploads/1/3/5/3/135331524/pumaluzibopur_zipenod_jiruwasele_pofojoze.pdfIn PDF document text
- https://cdn.sqhk.co/nakunadubux/xzuTqhg/allity_e-_learning_login.pdfIn PDF document text
- https://cdn.sqhk.co/livulopo/6jasijn/37801598695.pdfIn PDF document text
- https://cdn.sqhk.co/tikikizeveni/FhbxzMb/transfer_case_service_f150.pdfIn PDF document text
- https://madumowa.weebly.com/uploads/1/3/2/7/132710776/d67398b5a8f.pdfIn PDF document text
- https://cdn.sqhk.co/pugudanirav/hdGjgM2/jagopanozifesuko.pdfIn PDF document text
- https://pibiwija.weebly.com/uploads/1/3/4/8/134896476/redutesopova-fafosiwosirez-samewilorujila-wutovopalalij.pdfIn PDF document text
- https://dagepafu.weebly.com/uploads/1/3/2/7/132740813/e1faf7e3.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/fidefofudi/platform_toolset_v141_windows_7.pdfIn PDF document text
- https://s3.amazonaws.com/piwanisaj/how_much_memory_for_fl_studio.pdfIn PDF document text
- https://fae5df41-d68b-4d62-9961-cd33801cec7e.filesusr.com/ugd/f52c73_79ad51d5198645a7a031228bd6e51caa.pdf?index=trueIn PDF document text
- https://54179944-c6a3-49b3-9462-5d1939b6aff2.filesusr.com/ugd/49f5ef_125d4cc204be44058c6fc25b07361566.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/jajoxulabojaso/fexowiwezubo.pdfIn PDF document text
- https://s3.amazonaws.com/ratixifo/mekikibanaxufaxukuzamaf.pdfIn PDF document text
- https://a1c9bafd-2917-4c1b-b79c-a4b44a941470.filesusr.com/ugd/f0f215_f5842db987d1411fb2717da57e31eb12.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_off0000d55e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD55E | 5000 bytes |
SHA-256: 8d66343f174f7ba4114c62ea8fff7b074e3abca14564fdd048198f4ecbd6d678 |
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font_01_sfnt_off0000e677.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE677 | 10180 bytes |
SHA-256: e71adb2aae69d49be8649f21acf2dc6d23c91df19761be75d8e801670ae45e88 |
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