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 pointing to disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to psychology textbook summaries, aiming to trick users into clicking malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9995
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://mezovuduw.ru/strik?utm_term=psychology+12th+edition+myers+chapter+summaries PDF link annotation
- http://dommasters.site/nitecore_d2_charger_21700hy3w3.pdfIn PDF document text
- https://cdn.sqhk.co/memenewo/aBRiefc/43675703944.pdfIn PDF document text
- http://idealica-ordina.site/lakagobuxozawulisadoxoa2esw.pdfIn PDF document text
- http://hookup153.online/possessive_nouns_worksheet_for_grade_4powxh.pdfIn PDF document text
- https://cdn.sqhk.co/fasisela/dhcghtu/ditowizexinifewopiwax.pdfIn PDF document text
- http://requiredjokblog.com/vujazik3vcwx.pdfIn PDF document text
- https://cdn.sqhk.co/pumevigatare/7yTia0e/blue_color_code_in_android_studio.pdfIn PDF document text
- http://itdomen.fun/why_wont_my_kenmore_microwave_heatf052q.pdfIn PDF document text
- https://cdn.sqhk.co/jolodovi/jfheidO/xobivetovidegakonaw.pdfIn PDF document text
- https://cdn.sqhk.co/lupananonutu/dUheMhg/32113825032.pdfIn PDF document text
- https://cdn.sqhk.co/wafavalufa/iehajhA/58901646127.pdfIn PDF document text
- https://cdn.sqhk.co/tamaladafa/whaQjaT/pesovasizamejufidubilemej.pdfIn PDF document text
- https://cdn.sqhk.co/vagekoxes/jhS3ege/4719421363.pdfIn PDF document text
- http://50offstore.info/baa_nalle_madhuchandrake_kannada_movie_freemrd4l.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://e5aadbcf-511f-4ee2-989a-4410a22eeed0.filesusr.com/ugd/64930c_73e876cc3ef346199df7e612c5361d44.pdf?index=trueIn PDF document text
- https://5a98ae10-8c7e-48da-b83f-9bcbc644cfa3.filesusr.com/ugd/9a8764_a62c37a341424d539ab9d36774bc93dc.pdf?index=trueIn PDF document text
- https://4abf464d-34d5-4c80-8de5-e64f30e04530.filesusr.com/ugd/8b3eb5_05ba4cbdb26140d9a406c2f0324007d6.pdf?index=trueIn PDF document text
- https://7a579b3f-ce96-4c66-abdc-991530493d29.filesusr.com/ugd/010c6b_1ace155f122b4fe0a496eba61a074ace.pdf?index=trueIn PDF document text
- https://16fd3b15-5541-4454-9538-28daacbf497e.filesusr.com/ugd/e32576_936d23bbe84e492a93533c4a7fa42775.pdf?index=trueIn PDF document text
- https://d451e762-8e00-4155-9971-9512d28d2528.filesusr.com/ugd/b52961_718b301b532d425d9cd581adb554e76e.pdf?index=trueIn PDF document text
- https://c064424b-11a8-4e39-a524-24a74bcd733d.filesusr.com/ugd/54e393_8e1bdd3c30fb40d1b9df168247b159d4.pdf?index=trueIn PDF document text
- https://c3438639-6a75-4920-aa4f-d1e0b619354f.filesusr.com/ugd/3be3a7_9eba6d25fd82445ea23950dc914fba4c.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_off0000def8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDEF8 | 5772 bytes |
SHA-256: d2518ea33443049647022f12f1a8f2dd51ec1f5fe2ddda86597229d952f9fd76 |
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font_01_sfnt_off0000f27e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF27E | 10992 bytes |
SHA-256: beff8c4a57006f11996dbed17c84a5741509cd52af826cafc477018daea69d6d |
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