MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF was flagged by multiple critical heuristics for containing a malicious redirector link and a large link farm hosted on disposable infrastructure. The ML classifier and ClamAV also identified it as malicious. While no scripts were extracted, the embedded URLs suggest a phishing or spam campaign, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
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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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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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://crophysi.ru/strik?utm_term=frases+celebres+de+los+hermanos+karamazov In PDF document text
- https://cdn.sqhk.co/foxuninulini/Rhjhuja/vobomawajugipepavagegu.pdfIn PDF document text
- https://cdn.sqhk.co/pijujuweg/igjjghf/real_story_of_thanksgiving_history_channel.pdfIn PDF document text
- http://gbo.guru/limit_state_design_of_steel_structures_by_sk_duggalbdgwn.pdfIn PDF document text
- https://lenapejasuma.weebly.com/uploads/1/3/4/7/134749539/2817666.pdfIn PDF document text
- https://cdn.sqhk.co/gisatajofo/ggahigd/32295126234.pdfIn PDF document text
- http://elerctum.org/printable_weekly_timesheets_templates7mtr8.pdfIn PDF document text
- http://freshmind.net/apocalypto_2_full_movie_tamilt9buw.pdfIn PDF document text
- https://cdn.sqhk.co/xopuxuvop/hcs2rjb/roblox_promo_codes_generator.pdfIn PDF document text
- https://cdn.sqhk.co/luwivimexu/fVVjctM/xiwatesatugerevovawube.pdfIn PDF document text
- http://blekrossi.ru/nepali_typing_guidelineg3iwx.pdfIn PDF document text
- https://cdn.sqhk.co/mukutosi/zifhb8W/91349028223.pdfIn PDF document text
- https://cdn.sqhk.co/nedivixozu/jcEjdhf/ringcentral_meetings_outlook_add_in.pdfIn PDF document text
- http://strita.space/mesoxobiraziu5a5q.pdfIn PDF document text
- https://cdn.sqhk.co/wifinalimow/hjgicii/can_i_check_my_verizon_voice_messages_online.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4413867/normal_5fe5ee83486fd.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4426820/normal_6034654ba6fc9.pdfIn PDF document text
- https://rifuxegu.weebly.com/uploads/1/3/4/5/134525143/6634859.pdfIn PDF document text
- https://cdn.sqhk.co/zawatilirip/ajdgdia/pencilmation_games_to_play.pdfIn PDF document text
- https://tujozidu.weebly.com/uploads/1/3/4/6/134694944/nuniror.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://fac30f9c-1bc3-4ff6-ac40-7ced1d2a170b.filesusr.com/ugd/3b7182_b58cb09a777e47e7910649737fefa424.pdf?index=trueIn PDF document text
- https://b3a1a1c9-4f8f-4fb8-b7cc-7339030cc889.filesusr.com/ugd/162fe6_ec05a80287094e849bd6d741fdbcdf6d.pdf?index=trueIn PDF document text
- https://f395d2f2-f939-483b-815f-81062d4747ff.filesusr.com/ugd/be2697_db881cc068544482bc6a4de157bddbc1.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_off0000f0f3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0F3 | 5448 bytes |
SHA-256: 6786f8f167d0f80a0bd094a6ff7d809440a2c304a2e4ed79f14135d62bbd1073 |
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font_01_sfnt_off00010356.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10356 | 11776 bytes |
SHA-256: 8d6d99f94f7498dc6f6e257b4c971e775ed84de411ed37bf7af30fd403d06de9 |
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