MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file contains a large number of external links pointing to other PDF documents hosted on various disposable domains. This behavior is indicative of a link farm, likely used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, aligning with a phishing or trojan distribution pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 6
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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 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://jacksth.ru/123?utm_term=sorreltail+x+leafpool PDF link annotation
- https://static.s123-cdn-static.com/uploads/4369191/normal_5ffb69c4c85f9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379359/normal_5f931aeea7618.pdfIn PDF document text
- https://cdn.sqhk.co/zubavagi/Uo3hajb/other_free_dating_apps_like_tinder.pdfIn PDF document text
- https://lazekikobetilof.weebly.com/uploads/1/3/4/4/134443651/remusigijuniwa.pdfIn PDF document text
- https://cdn.sqhk.co/betewulo/KqjbGia/7825779289.pdfIn PDF document text
- https://site-1172263.mozfiles.com/files/1172263/32394692387.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408481/normal_5fb74679d3d31.pdfIn PDF document text
- https://cdn.sqhk.co/fenajobuwer/iXDgdhe/36799824832.pdfIn PDF document text
- https://dawemewi.weebly.com/uploads/1/3/4/7/134747996/vilet.pdfIn PDF document text
- https://cdn.sqhk.co/tutogalubete/ieAgjhd/lutogodexaritojo.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4466165/normal_5fb8787b81a0e.pdfIn PDF document text
- https://cdn.sqhk.co/botikavanov/cigGsW4/butitedepemisigotowiwutus.pdfIn PDF document text
- https://poxomovuru.weebly.com/uploads/1/3/1/3/131381772/79ad8cd5595.pdfIn PDF document text
- https://site-1180945.mozfiles.com/files/1180945/snake_and_ladder_problem_complexity.pdfIn PDF document text
- https://vunejodi.weebly.com/uploads/1/3/5/3/135382889/3a951a.pdfIn PDF document text
- https://site-1168260.mozfiles.com/files/1168260/35091887207.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368494/normal_5fbcb43239b59.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4379053/normal_5fc5ca2eade5e.pdfIn PDF document text
- https://cdn.sqhk.co/tomubozes/aFialie/swing_state_definition_english.pdfIn PDF document text
- https://cdn.sqhk.co/midipumep/iagiyib/lightsaber_color_meanings_list.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000de1a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE1A | 4888 bytes |
SHA-256: 9aa60a12b3aba3a11ecc6b9ae3d1d87e648151b88621993f3de465b993529e36 |
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font_01_sfnt_off0000eed4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEED4 | 10272 bytes |
SHA-256: 2bc1ac907c6643d640152a48bc778dd28f184ea65c010b138ea12cd90801887f |
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