MALICIOUS
136
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF document contains a large number of external links, many of which point to other PDF files hosted on various domains, forming a link farm. The document body mentions 'Linkin park numb 320kbps mp3 download', suggesting a lure to attract users. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates that the document may be intended to trick users into providing a password for an archive, a common tactic to bypass security scanning. The presence of embedded URLs and the ML classifier's high confidence score support the malicious verdict.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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 http://yongyinghuiyulezenmeyang.br3h.com/uploads/1/3/0/2/130270892/130270892.html#linkin+park+numb+320kbps+mp3+download
- http://mbhmanagement.com/uploads/1/3/0/5/130539714/10257.pdf
- http://prodinorte.com/uploads/1/3/0/2/130273743/2938128.pdf
- http://lylestarr.info/uploads/1/3/0/3/130313553/2476607.pdf
- http://gezinsdynamiek.eu/uploads/1/3/0/2/130291415/zodugaz.pdf
- http://data.ptenergy.net/uploads/1/3/0/6/130621351/wetug.pdf
- http://lmperrylaw.com/uploads/1/3/1/4/131406321/ludevatu.pdf
- http://mygreencirclerealty.com/uploads/1/3/0/5/130588790/690e0d1bbf.pdf
- http://yongyinghuiyulezenmeyang.br3h.com/uploads/1/3/0/2/130270892/terms.html
- http://yongyinghuiyulezenmeyang.br3h.com/uploads/1/3/0/2/130270892/dmca.html
- http://yongyinghuiyulezenmeyang.br3h.com/uploads/1/3/0/2/130270892/policy.html
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://zomobok.files.wordpress.com/2020/05/zuparolav.pdf
- https://litaripelu.files.wordpress.com/2020/05/tixuvafovizipo.pdf
- https://kuraxumu.files.wordpress.com/2020/05/jivelo.pdf
- https://mowugowewuv.files.wordpress.com/2020/05/74468947447.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 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00004c43.bin0997ec80106d3b0e72156e8eab358ca2714d9212ef534bedfb044b4026c47b9c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4C43 | 10800 bytes |
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