MALICIOUS
204
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
T1059.007 JavaScript
This PDF sample exhibits malicious characteristics, including malformed streams and links to known malicious redirectors. The presence of a critical heuristic firing for a malicious redirector at 'https://yafferge.ru/strik?utm_term=introduction+to+business+law+pdf+download' strongly suggests a phishing or malware distribution attempt. The ML classifier also flagged this PDF with high confidence, further supporting its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9993
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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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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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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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/strik?utm_term=introduction+to+business+law+pdf+download In PDF document text
- https://cdn.sqhk.co/kidurukazag/axP1q0u/sniper_assassin_zombie_survival_mission_3d_download.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4410443/normal_6018686dc9a6d.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4503874/normal_5ff2c55798bac.pdfIn PDF document text
- https://cdn.sqhk.co/gitaligido/m8TmIrt/28994251108.pdfIn PDF document text
- https://rixemovupel.weebly.com/uploads/1/3/1/6/131606965/82651fd37.pdfIn PDF document text
- http://bibopasaxuvibu.mypressonline.com/82242082361.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4403406/normal_5ffb407da827c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4487381/normal_603e686935084.pdfIn PDF document text
- http://xuzerujagojagip.scienceontheweb.net/31076856600.pdfIn PDF document text
- http://koxivesuvif.mypressonline.com/video_games_to_play_while_high.pdfIn PDF document text
- http://wuramegojuluz.mywebcommunity.org/construction_safety_manager_salary_california.pdfIn PDF document text
- http://rodisawikikofu.medianewsonline.com/medical_internet_of_things_and_big_data_in_healthcare.pdfIn PDF document text
- http://kepuxom.mypressonline.com/flight_of_the_bumblebee_violin_piano.pdfIn PDF document text
- http://riwuvodobopexu.mywebcommunity.org/balarama_digest.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4386591/normal_5fe3842d29472.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4482638/normal_6056d4c86237b.pdfIn PDF document text
- https://cdn.sqhk.co/rogevuzazi/e1ijijo/40554292154.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4486351/normal_5fe76cd78dbea.pdfIn PDF document text
- https://cdn.sqhk.co/giboxikewev/tjebNhb/final_fantasy_vii_remake_soundtrack_plus.pdfIn PDF document text
- https://famonusowofem.weebly.com/uploads/1/3/4/3/134349488/pafajufakalavipa.pdfIn PDF document text
- https://getenulezawo.weebly.com/uploads/1/3/4/8/134897364/duwilukexilimakurodo.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://xobebol.onlinewebshop.net/78280271867.pdfIn PDF document text
- http://suxazetevuzo.onlinewebshop.net/fomogiwaga.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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f321.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF321 | 5320 bytes |
SHA-256: be0570168dc25f56289047f640cc0edb3c8f3116187eaf0ebaa590550e5e2c92 |
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font_01_sfnt_off00010550.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10550 | 11484 bytes |
SHA-256: 319c102d6f0055641ef1a8f076951084fd60034a0d1943d4f9cc8c93904e4ce1 |
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