MALICIOUS
236
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious File
T1059.007 JavaScript
This PDF document was detected as malicious by ClamAV and an ML classifier. It contains a large number of external links, many of which point to PDF files, suggesting a link farm or redirection mechanism. The document also employs social engineering tactics, specifically a 'ClickFix' lure, instructing the user to copy and paste commands into a terminal, which is a common method to bypass macro restrictions and execute malicious code. The primary URL, 'https://infrive.ru/pbw?utm_term=macos+big+sur+usb+installer', likely serves as a lure to a malicious payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9961
Heuristics 7
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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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Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LUREDocument tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
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ClickFix social engineering attack high SE_CLICKFIXDocument instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
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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=macos+big+sur+usb+installer
- https://cdn-cms.f-static.net/uploads/4386595/normal_602b89e73d02b.pdf
- https://cdn-cms.f-static.net/uploads/4378151/normal_603323b8cb879.pdf
- https://cdn-cms.f-static.net/uploads/4373264/normal_605121ba8e914.pdf
- https://cdn-cms.f-static.net/uploads/4407331/normal_603e9c852ccf6.pdf
- https://static.s123-cdn-static-d.com/uploads/4376870/normal_60b0a8a0e46c2.pdf
- https://static.s123-cdn-static.com/uploads/4369336/normal_600505fa7e6d6.pdf
- https://static.s123-cdn-static-d.com/uploads/4371508/normal_60b2060503507.pdf
- https://duvozeja.weebly.com/uploads/1/3/0/7/130739152/04b1f.pdf
- https://jonexizuli.weebly.com/uploads/1/3/4/2/134235370/4e8d31a772.pdf
- https://static.s123-cdn-static.com/uploads/4369645/normal_5fc86a7eba77c.pdf
- https://cdn-cms.f-static.net/uploads/4493549/normal_60bd170c7672e.pdf
- https://golisarupu.weebly.com/uploads/1/3/5/3/135317681/e999c9a6.pdf
- https://balalowomave.weebly.com/uploads/1/3/0/7/130738893/6519082.pdf
- https://static.s123-cdn-static-d.com/uploads/4393483/normal_60afec028c052.pdf
- https://cdn-cms.f-static.net/uploads/4418170/normal_605bf364e29e9.pdf
- https://static.s123-cdn-static.com/uploads/4479942/normal_5fc904896e63f.pdf
- https://cdn-cms.f-static.net/uploads/4376609/normal_604cd217b3d3a.pdf
- https://static.s123-cdn-static.com/uploads/4490001/normal_6001106c19b24.pdf
- https://fibavizenimi.weebly.com/uploads/1/3/4/4/134485548/7831349.pdf
- https://xavubetikobu.weebly.com/uploads/1/3/4/4/134474291/eedf5bbedc7b.pdf
- https://cdn-cms.f-static.net/uploads/4393772/normal_60647e2235abc.pdf
- https://vafebukuwu.weebly.com/uploads/1/3/1/1/131163563/nasugubiz.pdf
- https://cdn-cms.f-static.net/uploads/4385214/normal_60b8ba50da912.pdf
- https://fuvetozexogix.weebly.com/uploads/1/3/0/8/130874326/3534432.pdf
- https://rirudelibuwa.weebly.com/uploads/1/3/1/6/131606594/385480.pdf
- https://static.s123-cdn-static.com/uploads/4369933/normal_6007b920766f2.pdf
- https://cdn-cms.f-static.net/uploads/4403140/normal_601ebb3c49f49.pdf
- https://veponigizut.weebly.com/uploads/1/3/0/9/130969631/571579.pdf
- https://cdn-cms.f-static.net/uploads/4388598/normal_60564b2c58a47.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- 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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f080.bind5b70b0fd848fdc9be780eb184c4dca287b81cd76dd0e178c90fa948b6717cd1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF080 | 5112 bytes |
font_01_sfnt_off000101fd.bindac02f77617fd6483b415e8c0fac359d5d068a012fa569f95c6da05855077111 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x101FD | 18812 bytes |
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