MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains multiple embedded URLs, with at least one pointing to known malicious redirector infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body appears to be obfuscated or corrupted, but the presence of URLs and heuristic firings like 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_DISPOSABLE_LINK_FARM' confirm its role as a lure to external malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 5
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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 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/123?utm_term=atmega32a+datasheet+pdf In PDF document text
- https://cdn.sqhk.co/rudugebakivo/ihz19hc/bubble_pirates_bubble_shooter_gratis.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378856/normal_5fe890369530d.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4404287/normal_5fd03a623f20d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382789/normal_60246fc3382a8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4456666/normal_601512bf9fee0.pdfIn PDF document text
- https://cdn.sqhk.co/lipetebo/ggW5z7a/39233276964.pdfIn PDF document text
- https://cdn.sqhk.co/wigatozaduw/fbuoigL/mix_app_download.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4404520/normal_6007d6e78f514.pdfIn PDF document text
- https://cdn.sqhk.co/lonuxonemor/fgdzIO0/kojinilijeritepaze.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4406473/normal_6022bc77447dd.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4484364/normal_5ff7852769fb4.pdfIn 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/tasufagijaremo/ligularia_reniformis_flower.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1c5361ad-85b0-4d18-86f6-4a3ee5229394/81464973307.pdfIn PDF document text
- https://d99d9bf7-a5e0-49f2-90ac-0d1bc881463d.filesusr.com/ugd/0182ef_52c4692a0f7d47da89218d6b70c4ef1f.pdf?index=trueIn PDF document text
- https://170d08c7-2527-4f8e-8bc4-cf7f6ffab704.filesusr.com/ugd/afe24e_f18cae58a7414ff9928fb9a64f5f491a.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/20060ce2-e901-4f4e-93b1-eb6557716c04/first_alert_carbon_monoxide_alarm_battery_change.pdfIn PDF document text
- https://s3.amazonaws.com/ladojenefe/sozirotolug.pdfIn PDF document text
- https://3682d434-6e27-4ac8-9ac2-d3ec24fa429c.filesusr.com/ugd/9b5f63_3fbb7a8c48074c95a196dba6676b76c1.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/wujapu/26300599567.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/638dc9a3-2320-4e1d-9d95-006ff2fc6e00/soccer_practice_plans_template.pdfIn PDF document text
- https://s3.amazonaws.com/tometubufimopim/pimuziruxetev.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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e59c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE59C | 5136 bytes |
SHA-256: a844ba6dc155f7ea5e00b3c8d5d91fce4ce7baa99f5b105756e0c596f17acf60 |
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font_01_sfnt_off0000f71d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF71D | 10780 bytes |
SHA-256: 7d571ba7c10f538987c65cb8d25cd0f2eacf8905181f27351283d38acf675514 |
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font_02_sfnt_off00011bd0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11BD0 | 4324 bytes |
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3 |
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