MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF document presents itself as an academic exam to lure users to a large number of external URLs, many of which are likely part of a link farm for SEO manipulation or malware distribution. The ML classifier strongly indicated maliciousness, and the embedded URLs suggest a phishing or credential harvesting attempt. No scripts were extracted, but the PDF structure and numerous external links are highly suspicious.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
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://exsightcapital.com/uploads/1/3/0/8/130874134/130874134.html#examen+de+espa%25C3%25B1ol+segundo+grado+de+secundaria PDF link annotation
- http://13k.undesirable.us/uploads/1/3/0/3/130323337/3b8f18b1.pdfIn PDF document text
- http://scoreadog.com/uploads/1/3/0/3/130323127/jazofome.pdfIn PDF document text
- http://advokathagerup.com/uploads/1/3/1/4/131453222/keral-beniwu.pdfIn PDF document text
- http://untamedappetites.com/uploads/1/3/1/4/131454762/wezikuguj-pupilumef-vatol.pdfIn PDF document text
- http://mta-sts.mail.meetthemessenger.com/uploads/1/3/0/9/130969221/2966009.pdfIn PDF document text
- http://vpn.stmartindp.com/uploads/1/3/0/6/130620972/fowosopa-ledepotutawa-nawuwimo-lofuziro.pdfIn PDF document text
- http://concussionhealthsummit.com/uploads/1/3/1/4/131453455/tewuk.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://bugigos.files.wordpress.com/2020/06/38598874907.pdfIn PDF document text
- https://gasoxof.files.wordpress.com/2020/06/71386186244.pdfIn PDF document text
- https://lunudosur.files.wordpress.com/2020/06/17857727550.pdfIn 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 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005a5c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5A5C | 11708 bytes |
SHA-256: b73dfef5809b860e36ce48a1e77be02180b88e1d325fdff2ffd4d7adf2d8bf8b |
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