MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded links pointing to known malicious redirector infrastructure, specifically 'https://yafferge.ru/strik'. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body is heavily obfuscated, but the presence of a malicious redirector URL suggests a phishing or credential harvesting attempt, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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/strik?utm_term=meade+lx200+telescope+review In PDF document text
- http://rujisuki.mygamesonline.org/elgato_game_capture_card_hd60_s_switch.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4421466/normal_5fd671f333162.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4474979/normal_5fe0cf28aca14.pdfIn PDF document text
- http://xafopawiki.medianewsonline.com/how_to_use_netgear_5_port_switch.pdfIn PDF document text
- http://mukinumatonewo.getenjoyment.net/voice_caddie_swing_caddie_sc100_review.pdfIn PDF document text
- http://xojuxelase.medianewsonline.com/marla_maples_age.pdfIn PDF document text
- http://zonuvak.medianewsonline.com/is_trop_a_root_word.pdfIn PDF document text
- http://tokexal.medianewsonline.com/lafilanox.pdfIn PDF document text
- http://makebugobiwuka.mypressonline.com/oxford_picture_dictionary_monolingual_english.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4403676/normal_5fdddc46a6508.pdfIn PDF document text
- http://fodefon.getenjoyment.net/60093789331.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4480580/normal_603e47dfe6cc9.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://2a4b29e6-a790-453e-81e7-e8b9caf2c27b.filesusr.com/ugd/bf0735_2872d339a8d54bd9904ac0b86b34bbb4.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/ab6dc6ea-9f5c-4a29-8245-011e7a12a2b7/70373946302.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5db3a327-ad6d-4124-afce-1c0c32cb7d39/burnham_series_2_gas_boiler_age.pdfIn PDF document text
- https://1eb42bdc-3da6-4b32-b75f-4382f1721f8e.filesusr.com/ugd/35474d_bab99a362b374af295240ec8b8421477.pdf?index=trueIn PDF document text
- https://5902ff30-e651-486c-ac37-3e8383bfa78f.filesusr.com/ugd/f35da0_d8aa677a85fe4576bc32c193d9b72d3c.pdf?index=trueIn PDF document text
- https://78ff948a-0765-49f5-a22c-0fbe0eba7848.filesusr.com/ugd/888d0b_115c44aed27b4b499a53e0653ad98166.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/3c213834-84f5-4730-920a-360055238913/samsung_galaxy_s4_mini_gt-i9195_datenblatt.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/47db1067-eeb1-4871-8f01-d46489e3857c/80586131745.pdfIn PDF document text
- https://8ed62699-7d02-4439-b935-4286882ef7d4.filesusr.com/ugd/229b11_65b8dd51e50a4a9383b602f79a5a80e1.pdf?index=trueIn PDF document text
- https://19972ee8-34f0-4900-8009-9f590161cd02.filesusr.com/ugd/64db51_2e6e804038404ff08d25ff61d5a46568.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/4b1cb718-e20e-4af1-83ef-a472599bef3e/maschine_studio_software_download.pdfIn PDF document text
- https://dc383e6d-b7a3-4e67-a88a-227fa542b6c3.filesusr.com/ugd/72b0e7_f6b0049f525f40f1ba25b0a2b7e6f4ae.pdf?index=trueIn PDF document text
- http://wudemexa.myartsonline.com/dell_latitude_e6410_charger_specs.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
- https://savannah.gnu.org/projects/freefont/In PDF document text
- http://www.gnu.org/licenses/In PDF document text
- http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 5
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f5cb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5CB | 6424 bytes |
SHA-256: 4455747fda9ac97410526ac3fee3ca643cc61cb592146befb7df79af2604d95b |
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font_01_sfnt_off000105ad.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105AD | 5568 bytes |
SHA-256: 29ee97144ae39643690018fc9540459a063a2bc04db742c7ab9aeda28595699f |
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font_02_sfnt_off000118c5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x118C5 | 2504 bytes |
SHA-256: 0ee854a24b89f7ee8570bbc505c50a6667f3068117e125e0485dee6a0a160261 |
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font_03_sfnt_off000123ac.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x123AC | 11180 bytes |
SHA-256: e5ac4759c56758b00483c658c93ddfc229be27a4dbb5047bc0e3e6e1e25c51cd |
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font_04_sfnt_off000149af.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x149AF | 16148 bytes |
SHA-256: d612c605d101522a7b082cd092ef78b209dae850c4a5e940dd0f53fb1bc5669f |
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