MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing lure. The document body, though heavily obfuscated, appears to contain keywords related to the endocrine system, likely to attract unsuspecting users.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://jumiwimov.ru/strik?utm_term=sistema+endocrino+funcion+de+cada+hormona PDF link annotation
- https://cdn-cms.f-static.net/uploads/4370746/normal_60155afd65bd6.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4443814/normal_5fcc93b0e4029.pdfIn PDF document text
- https://mefevujeloz.weebly.com/uploads/1/3/4/3/134317202/gejokila-basekok.pdfIn PDF document text
- https://cdn.sqhk.co/fovugemut/Rjjgjza/how_to_apple_music_onto_pc.pdfIn PDF document text
- https://mitalukomajamo.weebly.com/uploads/1/3/1/4/131437074/dalefunoxowo.pdfIn PDF document text
- https://cdn.sqhk.co/tusufawenu/DhcXih5/fonuzoxeluxinobe.pdfIn PDF document text
- https://cdn.sqhk.co/puwipaneke/M025hie/last_day_of_spring_2020_sjsu.pdfIn PDF document text
- https://cdn.sqhk.co/fowipovoji/nH3haig/riwoperevixofavu.pdfIn PDF document text
- https://cdn.sqhk.co/nitumatemi/agfmoUY/nordic_naturals_ultimate_omega_d3_liquid.pdfIn PDF document text
- https://cdn.sqhk.co/lesebonun/r7hfbii/37_marble_solitaire_solution.pdfIn PDF document text
- https://womegirig.weebly.com/uploads/1/3/4/5/134506381/senumesojobovoxoju.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412568/normal_6020728169e17.pdfIn PDF document text
- https://cdn.sqhk.co/samekikogeri/gijggig/95500724656.pdfIn PDF document text
- https://siromalad.weebly.com/uploads/1/3/5/3/135312661/7a6e423cc428df.pdfIn PDF document text
- https://cdn.sqhk.co/libavesonon/bQg1Y1R/3756992763.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4465257/normal_6032dc53d36ef.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/tajimipojimo/guvup.pdfIn PDF document text
- https://s3.amazonaws.com/tejuvonixag/lowulavi.pdfIn PDF document text
- https://ce3a146a-d504-4efb-981c-4593fb85d965.filesusr.com/ugd/5b5da7_c931519a269b4461b2f37167ad988e63.pdf?index=trueIn PDF document text
- https://d5aacb37-8766-4234-9cc8-c2ec3b911aba.filesusr.com/ugd/1e723b_f86ce5ff359846f694adc219059d62a2.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_off00012577.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12577 | 5332 bytes |
SHA-256: 199220a991dc4e1bc898739ca0d22d3e296a51eabaa3a4630ca9b030fc23865a |
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font_01_sfnt_off0001376b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1376B | 12096 bytes |
SHA-256: 4b3cea36d7e0c53f936e46ad276bb33c45e1a6871ffa8443e220da5026236c59 |
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