MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains a large number of external links, many of which point to other PDF files hosted on various domains. The document body suggests a pretext of a 'follow up on unanswered meeting request sample'. The ML classifier strongly flagged this PDF as malicious. The primary attack pattern involves luring users to a link farm of potentially malicious content.
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://three-ps-in-a-pod.com/uploads/1/3/1/1/131164406/131164406.html#follow+up+on+unanswered+meeting+request+sample PDF link annotation
- http://jinenkan.eu/uploads/1/3/1/4/131454503/medixotoniniv.pdfIn PDF document text
- http://rickyrickfit.com/uploads/1/3/0/5/130539934/buwem.pdfIn PDF document text
- http://samplesite300.info/uploads/1/3/1/8/131871478/gekivasa.pdfIn PDF document text
- http://pegasustravelstrailers.com/uploads/1/3/0/2/130287284/ae196ae492b773d.pdfIn PDF document text
- http://sanluisoralsurgery.net/uploads/1/3/0/3/130379549/nesovetofifenowa.pdfIn PDF document text
- http://toplifehacks.ca/uploads/1/3/0/7/130738755/wopixobo.pdfIn PDF document text
- http://zupo.ca/uploads/1/3/0/6/130639947/palalo.pdfIn PDF document text
- http://lyssaslovablejewels.com/uploads/1/3/1/1/131164160/5135869.pdfIn PDF document text
- http://randomfrankshots.com/uploads/1/3/0/7/130776386/7d29c0d38.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
- https://savannah.gnu.org/projects/freefont/In PDF document text
- http://www.gnu.org/licenses/In PDF document text
- http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00008d87.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8D87 | 6560 bytes |
SHA-256: 6c1540d0a5f855d4e15bdd473811253ecced84a97d0f5166e336a03dbd43194a |
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font_01_sfnt_off00009d8f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9D8F | 8704 bytes |
SHA-256: 7cc22c52fe6711b58eed7cf977477eeee66320f344816e51ce65f5c3328bcd44 |
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