MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with at least one, https://kuzutuzo.ru/strik?utm_term=zill+differential+equations+solutions+pdf, appearing to be a redirector for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to 'Zill differential equations solutions pdf'. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly suggest a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
Heuristics 5
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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External URI info PDF_URIPDF contains an external URL action
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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://kuzutuzo.ru/strik?utm_term=zill+differential+equations+solutions+pdf PDF link annotation
- http://bapatavusirave.mygamesonline.org/laporan_amdal.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382620/normal_5fda88b16501a.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4470222/normal_5fec3a1678a61.pdfIn PDF document text
- http://sixesijilolun.mywebcommunity.org/anlage_er_2020_ausfllbar.pdfIn PDF document text
- http://gnoogle.site/5952608290psll9.pdfIn PDF document text
- http://ritegifufefut.scienceontheweb.net/getting_to_know_arcgis_pro_second_edition_free.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383334/normal_606de6c2ef1f6.pdfIn PDF document text
- http://goldstein.capital/troy_bilt_string_trimmer_jumpstartqqr4t.pdfIn PDF document text
- http://waranijovuv.sportsontheweb.net/subject_verb_agreement_exercises_for_class_8_with_answers.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4406482/normal_606ad6dac50d6.pdfIn PDF document text
- http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdfIn PDF document text
- http://wordsidepost.top/cabelas_160-liter_commercial-grade_food_dehydrator_reviewsmc02z.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4376127/normal_60683de71ef7f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4471719/normal_6029f018705f4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4474988/normal_604191276fe1f.pdfIn PDF document text
- http://beautysss.site/a_link_to_the_past_randomizer_discorddlchq.pdfIn PDF document text
- http://mazers.fun/what_sentence_structure_can_an_author_use3djmc.pdfIn PDF document text
- http://remoliwagofaju.mywebcommunity.org/panchatantra_short_stories_in_telugu_free_download.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4388289/normal_60458ec7020a0.pdfIn PDF document text
- http://negedibomul.sportsontheweb.net/95111798201.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://zudupaxub.myartsonline.com/balancing_chemical_equations_tutorial.pdfIn PDF document text
- http://dokudaruriwiv.atwebpages.com/brokaw_bandgap.pdfIn PDF document text
- http://vakifavu.onlinewebshop.net/blockchain_meaning.pdfIn PDF document text
- http://muluwokixo.onlinewebshop.net/gubumu.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_off0000d126.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD126 | 5120 bytes |
SHA-256: 56fc3ca29f8ea02ff06a61e55e8dcc128895eba1c5b47f59e69eaff7bcc18a0b |
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font_01_sfnt_off0000e29e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE29E | 10592 bytes |
SHA-256: d36565ff3f6c7679f4ac754d728cfa5df0ecfecd54b7c1a5280b1917aac8ff2c |
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