MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL and the document body's deceptive title 'How to write a regression analysis paper' point towards a lure to external malicious sites.
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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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://botokaw.ru/strik?utm_term=how+to+write+a+regression+analysis+paper PDF link annotation
- https://static.s123-cdn-static.com/uploads/4374954/normal_5fc7f557108fd.pdfIn PDF document text
- https://bamebifubakuta.weebly.com/uploads/1/3/1/4/131408159/9545376.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4486368/normal_6056a5da794d7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387061/normal_602f22bdcc4cd.pdfIn PDF document text
- http://allrecipes.pro/sedative_and_hypnotics_pptfg2ic.pdfIn PDF document text
- http://copyrightreports.com/cmbok_4th_edition0ypod.pdfIn PDF document text
- https://jitogomufe.weebly.com/uploads/1/3/4/5/134588764/4736221.pdfIn PDF document text
- http://sodaapp.club/224756289792hbpn.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://855e1e5b-0daf-4dce-aa73-dfad2bfec5df.filesusr.com/ugd/ced2dc_1a9af3424b8c4db6bcd58d502a70a591.pdf?index=trueIn PDF document text
- http://juxirijedatez.rf.gd/cracking_whip_sound.pdfIn PDF document text
- https://50b44c92-959e-4a15-bf83-93d6b2b518d6.filesusr.com/ugd/3ed44c_6b5d2bb9551943d79e50bb9a5cbb0d02.pdf?index=trueIn PDF document text
- https://0df22b04-17ae-4e65-9af8-3af4445b4601.filesusr.com/ugd/71fd01_ca49e3aa585e473e86cd51df93649f70.pdf?index=trueIn PDF document text
- https://57ead060-d7b3-4f59-a803-6c9b47c0028a.filesusr.com/ugd/f30481_8632de3acffb4fd593fbf0c2dbc052ae.pdf?index=trueIn PDF document text
- https://9cfe8934-cc69-4f76-a0d0-2e9849ea4530.filesusr.com/ugd/fd9558_5d5ec705435941eca107fc919419b01a.pdf?index=trueIn PDF document text
- https://354df738-7a8c-4643-bdcd-aa58f7c4bd0c.filesusr.com/ugd/69cf62_97aa175e11cf4a0881e32b1e52900aa1.pdf?index=trueIn PDF document text
- http://repuvamiperubo.epizy.com/code_light_bold_font_free.pdfIn PDF document text
- https://dfdccaec-9019-42eb-ab8c-14eed22d5f88.filesusr.com/ugd/2e00cc_fdab556101bc43209db0b506c720b7aa.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000fbdb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFBDB | 4932 bytes |
SHA-256: 4e3e253bed34fb3d4fa4830fc3dd6da179691ebffbf2acad73679005e62df820 |
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font_01_sfnt_off00010cb8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10CB8 | 10648 bytes |
SHA-256: 35c7797819b0beabf09fabd120cc0b4b8b5bd57792400656e28e346c506cbcd8 |
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font_02_sfnt_off00013107.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13107 | 4324 bytes |
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3 |
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