MALICIOUS
136
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of external links, a common technique for SEO poisoning or redirecting users to malicious sites. The document body, though partially corrupted, references a classification of metals and non-metals, likely a lure to disguise the malicious intent. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of a link farm.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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://webdisk.collegedemsatiu.com/uploads/1/3/0/5/130588246/130588246.html#clasificacion+de+metales+no+metales+y+metaloides+en+la+tabla+periodica PDF link annotation
- http://www.budsbakeryboston.com/uploads/1/3/0/7/130740480/zekadoxigelezilepiba.pdfIn PDF document text
- http://baddecisionland.com/uploads/1/3/0/5/130539841/6f64f1.pdfIn PDF document text
- http://www.hartfordplumbingandwaterheaterbusiness.com/uploads/1/3/0/8/130873998/sokugajala.pdfIn PDF document text
- http://1-800events.com/uploads/1/3/0/5/130551417/9214666.pdfIn PDF document text
- http://koonyagarlicfestival.com/uploads/1/3/0/5/130588336/2434053.pdfIn PDF document text
- http://spiritualdirectionminstry.com/uploads/1/3/0/9/130969291/836b62da66.pdfIn PDF document text
- http://noblegoldens.com/uploads/1/3/0/8/130874679/18cf9b7e84ae.pdfIn PDF document text
- http://creativemusicclassrooms.com/uploads/1/3/1/4/131407300/561ba7a1.pdfIn PDF document text
- http://openedapples.net/uploads/1/3/0/3/130324063/nobilopoxikabarutag.pdfIn PDF document text
- http://epicgrouptours.net/uploads/1/3/0/3/130379333/xukopu_poberirajuzimuf.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
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000068f9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x68F9 | 8640 bytes |
SHA-256: e48d9790f08caad4f00896540b72eb5671e149939d4e7493d5e892af717b3fc4 |
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