MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded links that redirect to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier and ClamAV also flagged this file as malicious. The document body, though heavily obfuscated, suggests a lure related to an application template, which is a common phishing tactic. The primary IOC is the malicious redirector URL.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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=sample+letter+of+application+template In PDF document text
- https://cdn-cms.f-static.net/uploads/4379616/normal_604d3a49118ab.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4413112/normal_5ffa6aa86f3c1.pdfIn PDF document text
- http://psychologyrelax.xyz/gekozunoehe.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4475215/normal_5fe8a3901acdc.pdfIn PDF document text
- http://helplnstagramcontact6088756.com/98489762993spohz.pdfIn PDF document text
- https://cdn.sqhk.co/letarezetap/jjgcjiX/bluestacks_hd_app_player.pdfIn PDF document text
- http://stav-games.ru/jolimuaolxr.pdfIn PDF document text
- http://ottics.ru/motorola_sb5101u_xfinity2h4g1.pdfIn PDF document text
- https://cdn.sqhk.co/naziwixolagu/6Pjjbie/75947759835.pdfIn PDF document text
- https://cdn.sqhk.co/pafatewodoju/haGicjf/indoor_water_parks_near_iowa_city_ia.pdfIn PDF document text
- http://tronreserve.online/hr24-500_vs_hr24-100m8yut.pdfIn PDF document text
- https://cdn.sqhk.co/gepumenujeme/egj8Ehd/video_player_like_youtube_in_android_studio.pdfIn PDF document text
- http://opsnatur.fun/bal_hanuman_hd_movie_freebca3t.pdfIn PDF document text
- http://gtmedis.com/general_guidelines_for_clinical_pharmacy_practice_slideshare7o5uy.pdfIn PDF document text
- http://7lessons.space/29543537298frxrv.pdfIn PDF document text
- https://cdn.sqhk.co/fapewakuw/vifvTU9/southwest_airline_flights_from_chicago_to_las_vegas.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://1b15a19f-c8c2-4d9d-8c2f-e97aa7ecfe2c.filesusr.com/ugd/eb6c48_9401e096dc3140f9aa6c26f4c6a15a48.pdf?index=trueIn PDF document text
- http://jupuluna.epizy.com/7686577691.pdfIn PDF document text
- https://d451e762-8e00-4155-9971-9512d28d2528.filesusr.com/ugd/b52961_8b8e4cd9737147028ae94ff4fd4ad2b0.pdf?index=trueIn PDF document text
- http://wavuwiti.epizy.com/salary_of_medical_microbiologist_in_india.pdfIn PDF document text
- http://dujulekofolurad.rf.gd/72847183654.pdfIn PDF document text
- http://tiworetaganufo.epizy.com/xamenagetoxiluzove.pdfIn PDF document text
- https://d04c2b29-3777-4fe6-aaa9-ab96f87c3324.filesusr.com/ugd/43eb95_2b526dfc1a424a048b9be36974e9f2f6.pdf?index=trueIn PDF document text
- https://3d7c42e8-cad9-4196-8f3c-0f210fd97588.filesusr.com/ugd/1b7c00_e6e23aa56fbc493cb3881243cdefcd0d.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_off0000f5df.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5DF | 5084 bytes |
SHA-256: 6ec20070d2464935a139eb818f924c7e2f50df450298e1d85106bed3d6e520d9 |
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font_01_sfnt_off00010716.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10716 | 11064 bytes |
SHA-256: f6eddd28014fc7f430e23b37fe8a7fe6239c51d402b4f626fa9339d57eda53ba |
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