MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was identified as malicious by both a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous external URLs, with at least 30 links detected. The primary URL, 'https://crewmak.ru/pbw?utm_term=introduction+to+quantum+mechanics+griffiths+2nd+edition+solutions+manual+pdf', suggests a lure related to academic materials, likely to trick users into visiting potentially harmful sites. The presence of multiple disposable hosting domains (weebly.com) further supports a malicious distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 6
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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 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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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://crewmak.ru/pbw?utm_term=introduction+to+quantum+mechanics+griffiths+2nd+edition+solutions+manual+pdf PDF link annotation
- https://ganupedudajoz.weebly.com/uploads/1/3/4/5/134586443/miwojepebub_xelasatabur.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4482403/normal_606bcf237d948.pdfIn PDF document text
- https://wojatobarub.weebly.com/uploads/1/3/4/6/134612389/jifebuwavoxab.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4384836/normal_6028a0889bdf1.pdfIn PDF document text
- https://xavujome.weebly.com/uploads/1/3/0/7/130739328/5223616.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4476432/normal_5fca75651eee9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4446925/normal_6035affbe87d5.pdfIn PDF document text
- https://dubigeta.weebly.com/uploads/1/3/5/3/135341625/fejifutug_nitolijeje_tozebowivo.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4472783/normal_6061e8bf72fce.pdfIn PDF document text
- https://kuvuwivozud.weebly.com/uploads/1/3/6/0/136091804/8063642.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4407100/normal_6049c686188b5.pdfIn PDF document text
- https://fajuvupo.weebly.com/uploads/1/3/5/3/135310445/488056.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383308/normal_60250f55d8265.pdfIn PDF document text
- https://nitipitu.weebly.com/uploads/1/3/0/7/130775162/cb5eaadec40f8d5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4388165/normal_6023e78a7407d.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://uploads.strikinglycdn.com/files/24f529b6-6dab-4dac-84a1-589fc023372f/specific_heat_of_a_metal_lab_worksheet_answers.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/73e9a7a2-1ccc-429e-a121-83c9ecdf324d/clash_of_clans_mod_ios_2019.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/978b8348-935b-431a-9e1a-fb4126b088e8/wipijodasogukotibodadiji.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e4d64466-d8aa-4441-a599-8ef71727a7c7/22719981526.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b1229c1f-977a-4125-aeb2-74617e694ab7/tesumademobovefaxiwal.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d374.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD374 | 5648 bytes |
SHA-256: c9dbdb4985a0ae4bb5b50e3c2ef857265887bbf77172da7bd04d9b44dbb80901 |
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font_01_sfnt_off0000e671.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE671 | 10580 bytes |
SHA-256: 55af1f38de80f69888907b7c47d414a01f95a01c781a4bfeb48b7e5f45272d15 |
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font_02_sfnt_off00010a71.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A71 | 4324 bytes |
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e |
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