MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains a large number of external links, many hosted on disposable domains, designed to mimic search results for a technical book. This pattern is indicative of a link farm used for phishing or distributing further malware. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or trojan delivery.
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://infrive.ru/pbw?utm_term=fisica+volumen+1+resnick+5+edicion+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4488102/normal_600b12c4128e2.pdfIn PDF document text
- https://lonoripub.weebly.com/uploads/1/3/5/3/135319728/1360552.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4468536/normal_5fd3865f2c5e9.pdfIn PDF document text
- https://sodomolu.weebly.com/uploads/1/3/5/3/135398587/xobosivivokatotan.pdfIn PDF document text
- https://difidewuwigexej.weebly.com/uploads/1/3/4/6/134652805/zakuruborazerutuvida.pdfIn PDF document text
- https://static.s123-cdn-static-d.com/uploads/4446496/normal_60b02beb8a7d1.pdfIn PDF document text
- https://fezinonod.weebly.com/uploads/1/3/1/0/131070080/7360593.pdfIn PDF document text
- https://lolefisad.weebly.com/uploads/1/3/5/3/135344485/8a50e4.pdfIn PDF document text
- https://static.s123-cdn-static-d.com/uploads/4380857/normal_60b21f5b29dc2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4493589/normal_604330d58f2f8.pdfIn PDF document text
- https://kuvakikarubefi.weebly.com/uploads/1/3/1/3/131383404/jizidojosugatogek.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370273/normal_60385b79e1907.pdfIn PDF document text
- https://fubediko.weebly.com/uploads/1/3/1/0/131070718/2398489.pdfIn PDF document text
- https://sidujojuwizubal.weebly.com/uploads/1/3/4/5/134587716/39f41.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4386613/normal_5feb094776820.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4495841/normal_5fdc236ddf752.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365998/normal_605c0caed7804.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387054/normal_6051ca2c9c3af.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4501054/normal_602285ef5d147.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4410731/normal_6055609ac8d9f.pdfIn PDF document text
- https://kugakisan.weebly.com/uploads/1/3/4/3/134390280/zazekom-tugigizaterori-nupixenawura.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_off0000f11b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF11B | 5556 bytes |
SHA-256: 3405187cda6a14e90e73d832a4f21cab81440bcc0bae03391d8e6d627759345c |
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font_01_sfnt_off00010402.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10402 | 13996 bytes |
SHA-256: 8a8e13111e9c5f2a5135b1b79464efab9d40c8f5318774065636810d930c7d80 |
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