MALICIOUS
284
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document is classified as malicious due to its use of a link farm and redirection to known malicious infrastructure. The document attempts to lure users by appearing to offer a free download of CCleaner, but the embedded links lead to a collection of other PDFs hosted on various sites, including a redirector. This behavior is consistent with phishing or malware distribution campaigns.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 7
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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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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 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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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://cctraff.ru/aws?utm_term=ccleaner+full+version+free++blogspot In PDF document text
- https://cdn-cms.f-static.net/uploads/4427267/normal_5f990fd503a07.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373998/normal_5f93e91f3d798.pdfIn PDF document text
- https://cdn.sqhk.co/nosuterib/dihvxic/75188641518.pdfIn PDF document text
- http://mozodulo.iblogger.org/aclarar_cabello_negro_de_forma_natural.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4465548/normal_5fd98d1b9a486.pdfIn PDF document text
- https://vijosiza.weebly.com/uploads/1/3/4/7/134746498/9346559.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4426425/normal_5fb7452c32b12.pdfIn PDF document text
- http://tufidifegoz.66ghz.com/94590878140.pdfIn PDF document text
- https://gozerezujokosas.weebly.com/uploads/1/3/4/8/134856803/wigevuxibodukejuki.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393641/normal_5f913421a2644.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4427781/normal_5f9d640024cdf.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4449599/normal_5fb324e6d678a.pdfIn PDF document text
- https://cdn.sqhk.co/veleviziwew/zthb54e/claw_machine_halloween_costume.pdfIn PDF document text
- https://pebawozo.weebly.com/uploads/1/3/4/8/134865175/jesazeratupunor.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/miwolezedubujoz/ritulepun.pdfIn PDF document text
- https://s3.amazonaws.com/bolovopizonuki/rorogitesagemasitajigesa.pdfIn PDF document text
- http://sikirubuguje.epizy.com/free_general_ledger_template_excel.pdfIn PDF document text
- https://s3.amazonaws.com/liwara/bolaleve.pdfIn PDF document text
- http://sowinoto.epizy.com/lisobobipaxi.pdfIn PDF document text
- https://s3.amazonaws.com/damerirazib/boney_m_christmas_songs_lyrics_free.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_off0000eb46.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB46 | 5288 bytes |
SHA-256: 21885ebd948dc91284f574e05cf585b830a770f84f265be4b10412718c52dd79 |
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font_01_sfnt_off0000fd5c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD5C | 11796 bytes |
SHA-256: a18ba3c416095367e0d1129bbe8daf7acba28776df36a372f412078eccc6903b |
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