MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious File
The PDF document contains a large number of external links, many of which point to other PDF files on different domains. This suggests a link farm or redirection scheme designed to lead users to potentially malicious content. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of a mass external PDF link farm. The document body itself contains text related to research projects, likely a lure to disguise the malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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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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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://dumbo-octopus.com/uploads/1/3/0/8/130874520/130874520.html#aspectos+y+elementos+basicos+de+un+proyecto+de+investigacion PDF link annotation
- http://hoevedemolenhorst.nl/uploads/1/3/0/4/130489265/sidemakokezu.pdfIn PDF document text
- http://warginna.com/uploads/1/3/0/7/130739332/f6175f.pdfIn PDF document text
- http://parashantiyoga.com/uploads/1/3/0/3/130324370/vuvekeg.pdfIn PDF document text
- http://dronecamvision.com/uploads/1/3/0/6/130621575/dilebemul_jezexov_visivazabi_jubujowakorid.pdfIn PDF document text
- http://cruiseshipmusic.com/uploads/1/3/1/4/131406222/pubadebogigel.pdfIn PDF document text
- http://lifecoachsamantha.com/uploads/1/3/0/4/130489051/4c1bc8f51.pdfIn PDF document text
- http://simpyeventrentals.com/uploads/1/3/1/0/131070431/d27156b.pdfIn PDF document text
- http://streettreat.net/uploads/1/3/1/0/131070761/xizitow.pdfIn PDF document text
- http://thornfoundation.com/uploads/1/3/0/2/130291800/2806366.pdfIn PDF document text
- http://contreraschristina.com/uploads/1/3/0/2/130270779/5e168105b.pdfIn PDF document text
- http://boskgame.com/uploads/1/3/0/7/130776852/ea5ca3a.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
- https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text
🗂 Part of campaign:
bigcitystrangers.com
6 samples
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006486.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6486 | 8480 bytes |
SHA-256: d715144175b4276eefa1cb60025bea39b945ddeb7f75552f8af95c688168064e |
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font_01_sfnt_off0000834a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x834A | 2796 bytes |
SHA-256: 97a3418bd433653dafe652ac0a0841cf2f323fe672bd45d4cf3362d7102ed122 |
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