MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file is detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous external URIs, with a notable one pointing to a link farm on disposable hosting, disguised as a math answer key. While no scripts were explicitly extracted, the PDF structure and numerous embedded URLs suggest an attempt to redirect users to malicious sites for further exploitation.
Machine Learning
- Nyx PDF Classifier malicious score 0.9812
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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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://nipisod.ru/award?keyword=grade+10+math+answer+key+pdf+unit+3 PDF link annotation
- https://xigolomo.weebly.com/uploads/1/3/4/4/134483438/doruzof_taxib.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4488837/normal_5fee35ddaa16c.pdfIn PDF document text
- https://wezinifagewugi.weebly.com/uploads/1/3/2/8/132815004/6001597.pdfIn PDF document text
- http://wotidoteked.mywebcommunity.org/are_all_in_one_car_seats_safe_for_infants.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4389581/normal_5ff4e3d58669d.pdfIn PDF document text
- https://fafogefefotal.weebly.com/uploads/1/3/5/3/135314601/mowukavix_dezokeriter_kavab_nifikijigufi.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4457320/normal_605448d67ff57.pdfIn PDF document text
- https://xepesirivow.weebly.com/uploads/1/3/1/4/131408502/rerilirog.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4470968/normal_5ff89b9b3d736.pdfIn PDF document text
- http://xafesuvorolivig.scienceontheweb.net/before_the_law_franz_kafka_summary.pdfIn PDF document text
- http://nefozufovi.scienceontheweb.net/do_you_soak_wood_chips_before_smoking_electric_smoker.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4450907/normal_5fd041897caf5.pdfIn PDF document text
- https://vikenefimedok.weebly.com/uploads/1/3/4/3/134390201/pasab.pdfIn PDF document text
- http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/99163248-4895-4efd-a723-5ca845e1f29e/75825530833.pdfIn PDF document text
- http://radiviwix.onlinewebshop.net/cisco_ccna_security_210-260_book.pdfIn PDF document text
- https://49b821e7-ee7e-41b4-809b-d0417b8c1ddf.filesusr.com/ugd/927743_cb9f388a60274496886fe7de82719715.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/nakuzafol/invitation_email_template_for_training.pdfIn PDF document text
- https://e5720c39-3c1c-4a52-9be9-509675281b5a.filesusr.com/ugd/0010c8_76270186d98548bdb46d80413d9aee5c.pdf?index=trueIn PDF document text
- https://a49aa754-465e-4bbd-924e-b3d0e7b66bd4.filesusr.com/ugd/81d6a4_3a24d326a1234f93b8c263edf43f790a.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/bfda6e5c-1119-4e3a-b485-2ba4ae2f0453/xujeraro.pdfIn PDF document text
- https://d427386d-3434-45d9-8802-370857a594f4.filesusr.com/ugd/accd1f_bf1608c4dd5c40b88ed8ecaae35c2c53.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/gavobawum/the_mortal_instruments_city_of_fallen_angels_read_online.pdfIn PDF document text
- https://s3.amazonaws.com/remuv/17790503315.pdfIn PDF document text
- https://s3.amazonaws.com/mukutud/914933847.pdfIn PDF document text
- https://s3.amazonaws.com/megujobemegor/como_matar_a_un_ruiseor_filmaffinity.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a80c7a5f-a7d8-4dd6-93f0-acf7a173e8bc/volvo_penta_sx_parts_list.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c9719b99-ff30-4f23-b90d-29b19b8bca2b/medovosopad.pdfIn PDF document text
- https://edcb5511-827b-40b0-97c1-3499c313f96b.filesusr.com/ugd/0779a3_e99dc9cd9622461a9228ce046f68a133.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00022301.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x22301 | 3440 bytes |
SHA-256: 5cea4a65a96b42bb35dfc3fdc9a34d5306d5f7c83fee23808e42820fb8ce01cd |
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font_01_sfnt_off00023089.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x23089 | 5896 bytes |
SHA-256: 53ae4bbf3f1b3f7b641a33c16932fd38f582f75055788e72e6b810eea38b9ef4 |
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font_02_sfnt_off00024491.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x24491 | 16628 bytes |
SHA-256: 384c62c010066f8eb5ab1b9e7af021efdcbf6e9b2486c5f66f765f1d9181a03e |
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