MALICIOUS
252
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
The PDF file contains a link farm designed to appear as a driver download, redirecting users to malicious infrastructure. The presence of a 'download button' heuristic and numerous external PDF links, including one pointing to a known malicious redirector, strongly suggests a phishing or malware distribution attempt. The ML classifier and ClamAV detection further corroborate the malicious nature of this document.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 7
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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 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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://yafferge.ru/award?keyword=hp+officejet+6500a+plus+driver+windows+10+64+bit In PDF document text
- https://cdn-cms.f-static.net/uploads/4379231/normal_600b3d10bc984.pdfIn PDF document text
- https://kuvijoxujav.weebly.com/uploads/1/3/4/2/134266993/33ca5de37745713.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4485930/normal_5ff02ba48aaae.pdfIn PDF document text
- https://vedexojofidas.weebly.com/uploads/1/3/4/5/134581268/2058228.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4389568/normal_5fe941139e9e9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4385636/normal_6031e15c7dcb3.pdfIn PDF document text
- http://sawemawe.mywebcommunity.org/how_to_put_baby_in_graco_snugride_35.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4393751/normal_5fcf3bd6c9d8a.pdfIn PDF document text
- https://xijexarara.weebly.com/uploads/1/3/4/0/134017378/7df713.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4417643/normal_6030270449989.pdfIn PDF document text
- http://vipadobotisituz.mygamesonline.org/commercial_electric_multimeter_mmm-8301s_manual.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/bokelur/degemit.pdfIn PDF document text
- https://s3.amazonaws.com/tulosa/credit_collection_letter_template.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d67a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD67A | 6036 bytes |
SHA-256: fc3b80a7cc3ad1c48fbc674f387838ce017de2c661bce022821264b6fcdb98df |
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font_01_sfnt_off0000eb3a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB3A | 10136 bytes |
SHA-256: 04eb6907f04039ea40973949653e8357717631cf5b67a2d6ba29c3006c8d8073 |
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font_02_sfnt_off00010e37.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E37 | 16144 bytes |
SHA-256: 4b39140c652e6d058fe59e0172338ed7e0b8c56e7cdf0ba82c6c8c4172db5d18 |
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