MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links, many of which point to disposable hosting and are likely part of a link farm designed to improve search engine rankings for malicious content. One prominent link leads to a known malicious redirector infrastructure, suggesting an attempt to deliver a payload or phish users. The ClamAV detection and ML classifier further support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9993
Heuristics 6
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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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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 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=free++twitter+for+laptop+windows+10
- https://najusijas.weebly.com/uploads/1/3/5/4/135400897/sexalogikonex-silimelitop.pdf
- http://dafesoxexigu.medianewsonline.com/biochemistry_books_for_msc.pdf
- https://dutosagow.weebly.com/uploads/1/3/0/7/130775111/wifuruv_jamepuwimew_kimiwi_fafiwazale.pdf
- https://fuwowomazusora.weebly.com/uploads/1/3/4/0/134000162/2563324.pdf
- https://xokebewogaxuwu.weebly.com/uploads/1/3/4/5/134588239/596165eae278008.pdf
- https://movimuwetimegi.weebly.com/uploads/1/3/4/3/134342740/wikipijojix_pizudis_fabesaxusos_muwumuk.pdf
- http://ritefajitexu.scienceontheweb.net/pejagusililon.pdf
- http://nesebonuvobeju.getenjoyment.net/percent_composition_practice_worksheet_with_answers.pdf
- http://lixorajepidil.mygamesonline.org/warren_wiersbe_be_books.pdf
- https://xiruzukigipimog.weebly.com/uploads/1/3/4/8/134865515/2577287.pdf
- https://bebiluredop.weebly.com/uploads/1/3/3/9/133987060/wupunezube.pdf
- http://xonigej.mypressonline.com/sample_treasurer_report_for_booster_club.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://113c517c-d7b0-4b36-99d7-6722bcb7ef36.filesusr.com/ugd/8e66a5_e2b50240c14140a98a1435ad5eaf8771.pdf?index=true
- https://uploads.strikinglycdn.com/files/b4dfa155-e851-4fe5-a77c-d3004da04c0d/gabriels_inferno_part_4_passionflix_release_date.pdf
- https://46fb9a51-9e16-4ad8-811e-2f7ed01702f7.filesusr.com/ugd/53363c_9e22e41f941d47f590b5fb462bbee711.pdf?index=true
- https://uploads.strikinglycdn.com/files/52525924-ca66-4cc0-91db-bf23881a67c5/82455284905.pdf
- https://da550aaf-34ae-4f9b-ad82-7836b82beebe.filesusr.com/ugd/a203e6_9556574deec549dc8dab9ee074ac4ad2.pdf?index=true
- https://9d03b195-5c34-4993-8a23-519dd2bddccd.filesusr.com/ugd/9ac058_168b6481f1ce4172abc458ee8c99c92d.pdf?index=true
- https://uploads.strikinglycdn.com/files/2546b598-501b-4645-b4a0-357c49ec7efd/ancient_world_history_essay_topics.pdf
- https://s3.amazonaws.com/zewimu/wulokoxikaporekovepibumu.pdf
- https://uploads.strikinglycdn.com/files/a7f76569-f7b6-4152-b8a6-5e20e294d998/91310988259.pdf
- https://1dab3517-3db0-43ff-9fd6-b65b51f65b60.filesusr.com/ugd/565485_aaa59f025d704662a048d3b995d394f8.pdf?index=true
- https://uploads.strikinglycdn.com/files/d1774c8d-0233-4a66-84fb-80d3713bd1a1/binomial_probability_distribution_problems_and_answers.pdf
- https://s3.amazonaws.com/luborinizu/redhead_gun_safe.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00011a33.bin707d212fe738f116ed599dfbaff886595eedc6d0ab94bc8c3089eb67836e847f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A33 | 5276 bytes |
font_01_sfnt_off00012c4c.bin553d623e62fdae4d548210bd47ec48729e16d010861884dd6846c182221b56eb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12C4C | 10836 bytes |
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