MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a large number of external links, many of which are likely part of a link farm or SEO manipulation scheme. One of the primary URLs identified is https://druttle.ru/strik?utm_term=singer+sewing+machine+froze+up, which is suspicious due to its structure and domain. The presence of embedded JavaScript, though not explicitly detailed in the provided evidence, is a common method for executing malicious actions within PDFs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9994
Heuristics 5
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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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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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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://druttle.ru/strik?utm_term=singer+sewing+machine+froze+up
- http://benosetib.iblogger.org/zoxegodekukipete.pdf
- https://cdn-cms.f-static.net/uploads/4420905/normal_5fe900cba589d.pdf
- https://diwowure.weebly.com/uploads/1/3/4/5/134592565/5356967.pdf
- https://static.s123-cdn-static.com/uploads/4380403/normal_5fffc679a68aa.pdf
- https://static.s123-cdn-static.com/uploads/4454684/normal_5ffa4555e9906.pdf
- https://static.s123-cdn-static.com/uploads/4417652/normal_5fe599b964b83.pdf
- https://zaduguwage.weebly.com/uploads/1/3/0/8/130874015/1469183.pdf
- https://static.s123-cdn-static.com/uploads/4486365/normal_5fc90b256c663.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://s3.amazonaws.com/sorapobuk/estilo_de_aprendizaje_activo.pdf
- https://s3.amazonaws.com/zalomi/an_autobiography_of_a_yogi_malayalam.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000107e1.bin57bcc0f0673224dfa1b249b83ec6cf051917358d8d35112e7a492224c83c2606 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x107E1 | 5444 bytes |
font_01_sfnt_off00011a46.binfa366705987eb352857b228b91cba156c43f5907fa21dfceba0952cab2a7601f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A46 | 11000 bytes |
font_02_sfnt_off00013fb8.bind1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13FB8 | 4324 bytes |
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