MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The sample is a PDF file flagged by multiple heuristics as malicious, including a critical alert for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create malicious PDFs. The numerous embedded URLs point to a link farm strategy, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
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://dafemum.ru/award?keyword=journal+articles+on+autism+pdf In PDF document text
- https://cdn.sqhk.co/takejirasomu/hhhhjdZ/create_your_own_star_galaxy_heroes.pdfIn PDF document text
- http://medebupima.sportsontheweb.net/loxinumulutiwadupade.pdfIn PDF document text
- https://cdn.sqhk.co/gagowuname/hhcxAxw/welo_taxi_requisitos_chofer.pdfIn PDF document text
- http://fogivuwekewelub.iblogger.org/rarotizotuzutotemev.pdfIn PDF document text
- http://mandarin-fruit.space/explain_the_concept_of_human_condition_before_science_and_technologytp78v.pdfIn PDF document text
- http://nufemewi.iblogger.org/paxuvigajekine.pdfIn PDF document text
- http://opssmall.space/168527546297b94x.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4453537/normal_600a76044f71e.pdfIn PDF document text
- https://cdn.sqhk.co/rewakevutel/VoiiQIm/whispering_woods_road_12.pdfIn PDF document text
- https://cdn.sqhk.co/dodiniwotud/jbjhXig/star_wars_roleplaying_game_dice.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4372982/normal_5fe8d9c4b725b.pdfIn PDF document text
- http://mail-autoscout24.net/944107610331q2gh.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4411944/normal_5fc6ca7a3fca3.pdfIn PDF document text
- https://cdn.sqhk.co/kululojilo/iehgije/dufefazop.pdfIn PDF document text
- http://drive4mclaneeffingham.com/jazobexutusoboe7jp2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4419623/normal_602d9626e34a2.pdfIn PDF document text
- http://finipupote.mywebcommunity.org/cours_anglais_debutant.pdfIn PDF document text
- https://cdn.sqhk.co/vujejanar/gjWjiha/green_bean_casserole_paula_deen_food_network.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4502567/normal_602e233885e1f.pdfIn PDF document text
- https://cdn.sqhk.co/zatovafer/hjEheGx/kenekikobubif.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://davofunup.onlinewebshop.net/the_beatles_something_chords.pdfIn PDF document text
- http://bujozedaworora.epizy.com/search_windows_explorer.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_off00012103.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12103 | 5288 bytes |
SHA-256: 60c5c40d693dc47a7beaa03d02fdf919ec988708ebd58b1465c8facd5849a6d3 |
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font_01_sfnt_off000132e6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x132E6 | 11784 bytes |
SHA-256: 8893734d813c3f54d133066f2c6450f61591d46704a25c20bcc170afbf6f1446 |
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